• SpringMVC

    一、

    1.entity

     1 package com.zhidi.entity;
 2 
 3 import java.util.Date;
 4 
 5 import org.springframework.format.annotation.DateTimeFormat;
 6 
 7 import com.fasterxml.jackson.annotation.JsonFormat;
 8 import com.fasterxml.jackson.annotation.JsonIgnore;
 9 import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
10 
11 //忽略一系列的属性,在类上加@JsonIgnoreProperties({"hibernateLazyInitializer","handler"})
12 //避免延迟加载的关联对象在转换为JSON数据时出现异常。
13 @JsonIgnoreProperties({"age","id"})
14 public class Student {
15     
16     //用在属性上，表示忽略此属性
17     @JsonIgnore
18     private Integer id;
19     private String userName;
20     private String sex;
21     private Integer age;
22     /*@DateTimeFormat(pattern="yyyy-MM-dd")*/
23     //格式化时间
24     @JsonFormat(pattern="yyyy_MM_dd")
25     private Date date;
26     public Integer getId() {
27         return id;
28     }
29     public void setId(Integer id) {
30         this.id = id;
31     }
32     public String getUserName() {
33         return userName;
34     }
35     public void setUserName(String userName) {
36         this.userName = userName;
37     }
38     public String getSex() {
39         return sex;
40     }
41     public void setSex(String sex) {
42         this.sex = sex;
43     }
44     public Integer getAge() {
45         return age;
46     }
47     public void setAge(Integer age) {
48         this.age = age;
49     }
50     public Date getDate() {
51         return date;
52     }
53     public void setDate(Date date) {
54         this.date = date;
55     }
56     @Override
57     public String toString() {
58         return "Student [id=" + id + ", userName=" + userName + ", sex=" + sex + ", age=" + age + ", date=" + date
59                 + "]";
60     }
61 
62 }
    View Code
     1 package com.zhidi.entity;
 2 
 3 import org.hibernate.validator.constraints.Email;
 4 import org.hibernate.validator.constraints.NotEmpty;
 5 
 6 public class User {
 7     
 8     private Integer id;
 9     @NotEmpty(message="{name.notNull}")
10     private String name;
11     @NotEmpty(message="{password.notNull}")
12     private String password;
13     @Email(message="{email.error}")
14     private String email;
15     public Integer getId() {
16         return id;
17     }
18     public void setId(Integer id) {
19         this.id = id;
20     }
21     public String getName() {
22         return name;
23     }
24     public void setName(String name) {
25         this.name = name;
26     }
27     public String getPassword() {
28         return password;
29     }
30     public void setPassword(String password) {
31         this.password = password;
32     }
33     public String getEmail() {
34         return email;
35     }
36     public void setEmail(String email) {
37         this.email = email;
38     }
39     @Override
40     public String toString() {
41         return "User [id=" + id + ", name=" + name + ", password=" + password + ", email=" + email + "]";
42     }
43     
44 
45 }
    View Code

    2.util

     1 package com.zhidi.util;
 2 import java.text.ParseException;
 3 import java.text.SimpleDateFormat;
 4 import java.util.Date;
 5 
 6 import org.springframework.core.convert.converter.Converter;
 7 /*
 8  * 自定义日期转化器
 9  */
10 public class DateFormat implements Converter<String, Date> {
11 
12     @Override
13     public Date convert(String date) {
14         SimpleDateFormat sf = new SimpleDateFormat("yyyy-MM-dd");
15         try {
16             return sf.parse(date);
17         } catch (ParseException e) {
18             e.printStackTrace();
19         }
20         return null;
21     }
22 
23 }
    View Code
     1 package com.zhidi.util;
 2 
 3 import java.text.ParseException;
 4 import java.text.SimpleDateFormat;
 5 import java.util.Date;
 6 
 7 import org.springframework.core.convert.converter.Converter;
 8 
 9 public class DateFormat1 implements Converter<String, Date>{
10     
11     private String pattern;
12 
13     @Override
14     public Date convert(String date) {
15         SimpleDateFormat sf=new SimpleDateFormat(pattern);
16         try {
17             return sf.parse(date);
18         } catch (ParseException e) {
19             e.printStackTrace();
20         }
21         
22         return null;
23     }
24     
25     public void setPattern(String pattern) {
26         this.pattern = pattern;
27     }
28 
29 }
    View Code
     1 package com.zhidi.util;
 2 
 3 import java.io.IOException;
 4 import java.io.PrintWriter;
 5 import java.util.HashMap;
 6 import java.util.Map;
 7 
 8 import javax.servlet.http.HttpServletRequest;
 9 import javax.servlet.http.HttpServletResponse;
10 
11 import org.springframework.web.servlet.HandlerExceptionResolver;
12 import org.springframework.web.servlet.ModelAndView;
13 
14 import com.fasterxml.jackson.databind.ObjectMapper;
15 
16 /*
17  * 实现HandlerExceptionResolver接口的自定义异常处理器
18  */
19 public class ExceptionResolver implements HandlerExceptionResolver{
20 
21     @Override
22     public ModelAndView resolveException(HttpServletRequest request, HttpServletResponse response, Object handler,
23             Exception e) {
24         
25         //获得请求头信息中的X-Requested-With值，判断是非为json数据(XMLHttpRequest)
26         String xrw=    request.getHeader("X-Requested-With");
27         if(xrw!=null&&"XMLHttpRequest".equalsIgnoreCase(xrw))
28         {
29             //设置请求头信息
30             response.setContentType("application/json;charset=utf-8");
31             //获取流
32             try {
33                 PrintWriter out=response.getWriter();
34                 Map<Object, Object> map=new HashMap<>();
35                 map.put("success", false);
36                 map.put("msg", e.getMessage());
37                 
38                 //通过ObjectMapper转化为json数据并输出
39                 ObjectMapper mapper=new ObjectMapper();
40                 mapper.writeValue(out, map);
41                 out.flush();
42                 out.close();
43                 return null;
44                 
45             } catch (IOException e1) {
46                 e1.printStackTrace();
47             }
48         }
49         
50         //创建ModelAndView对象
51         ModelAndView view=new ModelAndView();
52         //设置异常页面
53         view.setViewName("error");
54         view.addObject("error", "傻逼");
55         return view;
56     }
57 
58 }
    View Code

    3.controller

     1 package com.zhidi.controller;
 2 
 3 import org.springframework.stereotype.Controller;
 4 import org.springframework.web.bind.annotation.RequestBody;
 5 import org.springframework.web.bind.annotation.RequestMapping;
 6 
 7 import com.zhidi.entity.Student;
 8 
 9 @Controller
10 public class JsonController {
11 
12     @RequestMapping("/toJson")
13     public String toJson() {
14         return "json";
15     }
16 
17     @RequestMapping("/json")
18     public String json(@RequestBody Student student) {
19         System.out.println(student);
20         return "success";
21     }
22     
23     
24 }
    View Code
     1 package com.zhidi.controller;
 2 
 3 import java.util.ArrayList;
 4 import java.util.Date;
 5 import java.util.HashMap;
 6 import java.util.List;
 7 import java.util.Map;
 8 
 9 import org.springframework.stereotype.Controller;
10 import org.springframework.web.bind.annotation.RequestMapping;
11 import org.springframework.web.bind.annotation.ResponseBody;
12 
13 import com.zhidi.entity.Student;
14 
15 @Controller
16 @ResponseBody
17 @RequestMapping("/json")
18 public class JsonController1 {
19     
20     @RequestMapping("/json")
21     public Student json()
22     {
23         Student stu=new Student();
24         stu.setUserName("张三");
25         stu.setSex("男");
26         stu.setId(2);
27         stu.setDate(new Date());
28         
29         return stu;
30     }
31     
32     
33     @RequestMapping("/map")
34     public Map<Object, Object> map()
35     {
36         Map<Object, Object> map=new HashMap<>();
37         map.put("name", "尼古拉斯");
38         List<Object> list=new ArrayList<>();
39         list.add("赵四");
40         list.add("刘能");
41         list.add("杀驴逼");
42         map.put("list", list);
43         return map;
44                 
45     }
46     
47 
48 }
    View Code
     1 package com.zhidi.controller;
 2 
 3 import java.io.IOException;
 4 import java.io.PrintWriter;
 5 import java.util.HashMap;
 6 import java.util.Map;
 7 
 8 import javax.servlet.http.HttpServletRequest;
 9 import javax.servlet.http.HttpServletResponse;
10 
11 import org.springframework.stereotype.Controller;
12 import org.springframework.ui.ModelMap;
13 import org.springframework.web.bind.annotation.ModelAttribute;
14 import org.springframework.web.bind.annotation.RequestMapping;
15 import org.springframework.web.servlet.ModelAndView;
16 
17 import com.zhidi.entity.Student;
18 
19 @Controller
20 public class ReturnController {
21 
22     // 返回类型为ModelAndView，在页面可以通过el表达式获得
23     @RequestMapping("/mv")
24     public ModelAndView mv() {
25         ModelAndView mv = new ModelAndView();
26         //为其指定逻辑视图名
27         mv.setViewName("welcome");
28         //将数据封装到mv中
29         mv.addObject("name", "张三");
30         return mv;
31     }
32     
33     
34     @RequestMapping("/stu")
35     public Student pojo(Student stu)
36     {        
37         stu.setUserName("赵虎");    
38         stu.setAge(33);
39         return stu;
40     }
41     
42     
43     @RequestMapping("/void")
44     public void returnVoid(HttpServletRequest request,HttpServletResponse response) throws IOException
45     {
46         response.setContentType("application/json; charset=utf-8");
47         PrintWriter out=response.getWriter();
48         out.println("{"name":"张三"}");
49         out.flush();
50         out.close();
51     }
52 
53     @RequestMapping("/modelMap")
54     public ModelMap modelMap(ModelMap modelMap)
55     {
56         modelMap.put("name", "赵四");
57         return modelMap;
58     }
59     
60     @RequestMapping("/map")
61     public Map<Object, Object> map()
62     {
63         HashMap<Object, Object> map=new HashMap<>();
64         map.put("name", "刘能");
65         return map;
66     }
67     
68     
69     @ModelAttribute("stu")
70     public Student model()
71     {
72         Student stu=new Student();
73         stu.setId(12);        
74         return stu;
75     }
76     
77     @RequestMapping("/edit")
78     public Student edit(@ModelAttribute("stu") Student stu1)
79     {
80         System.out.println(stu1);
81         stu1.setId(111);
82         return stu1;
83     }
84     
85     
86         
87     
88 }
    View Code
     1 package com.zhidi.controller;
 2 
 3 import org.springframework.stereotype.Controller;
 4 import org.springframework.ui.Model;
 5 import org.springframework.web.bind.annotation.ModelAttribute;
 6 import org.springframework.web.bind.annotation.RequestMapping;
 7 import org.springframework.web.bind.annotation.SessionAttributes;
 8 import org.springframework.web.bind.support.SessionStatus;
 9 
10 import com.zhidi.entity.Student;
11 
12 @Controller
13 //@SessionAttributes("stu")指定将特定的user模型数据添加到session中
14 @SessionAttributes("stu")
15 public class SessionController {
16     
17     @RequestMapping("/login")
18     public String login(Student stu,Model model)
19     {
20         if(stu!=null)
21         {
22             model.addAttribute("stu",stu);
23             return "success";
24         }
25         return "login";
26     }
27     
28     @RequestMapping("/toLogin")
29     public String toLogin()
30     {
31         return "login";
32     }
33     
34 
35     @RequestMapping("/modify")
36     public String modify(@ModelAttribute("stu") Student stu)
37     {    
38         System.out.println(stu);
39         return "success";
40     }
41     
42     @RequestMapping("/logout")
43     public String logout(@ModelAttribute("stu") Student stu,SessionStatus status)
44     {
45         System.out.println(stu);
46         status.setComplete();
47         return "login";
48     }
49 }
    View Code
     1 package com.zhidi.controller;
 2 
 3 import java.util.HashMap;
 4 import java.util.Map;
 5 
 6 import javax.servlet.http.HttpServletRequest;
 7 
 8 import org.springframework.stereotype.Controller;
 9 import org.springframework.web.bind.annotation.ExceptionHandler;
10 import org.springframework.web.bind.annotation.RequestMapping;
11 import org.springframework.web.bind.annotation.ResponseBody;
12 
13 @Controller
14 public class TestExceptionController {
15 
16     //@ExceptionHandler只能处理当前的异常 
17     /*@ExceptionHandler
18     public String handler(HttpServletRequest request,Exception e)
19     {
20         request.setAttribute("e", e);
21         return "success";
22     }*/
23     
24     
25     
26     @RequestMapping("/test")
27     public String test()
28     {
29         int[] a={};
30         System.out.println(a[3]);
31         
32         return "success";
33     }
34     
35     //调到json页面
36     @RequestMapping("/toAjax")
37     public String tojson()
38     {
39         return "ajax";
40     }
41     
42     @ResponseBody
43     @RequestMapping("/ajax")
44     public Map<String, Object> ajax()
45     {
46         int[] arrays = new int[10];
47         System.out.println(arrays[100]);
48         Map<String, Object> result = new HashMap<String, Object>();
49         result.put("success", true);
50         result.put("msg", "123");
51         
52         return result;
53     }
54     
55     
56     
57 }
    View Code
      1 package com.zhidi.controller;
  2 
  3 import java.io.File;
  4 import java.io.FileInputStream;
  5 import java.io.IOException;
  6 import java.io.InputStream;
  7 import java.io.OutputStream;
  8 import java.io.UnsupportedEncodingException;
  9 
 10 import javax.servlet.http.HttpServletRequest;
 11 import javax.servlet.http.HttpServletResponse;
 12 
 13 import org.apache.commons.io.FileUtils;
 14 import org.springframework.http.HttpHeaders;
 15 import org.springframework.http.HttpStatus;
 16 import org.springframework.http.MediaType;
 17 import org.springframework.http.ResponseEntity;
 18 import org.springframework.stereotype.Controller;
 19 import org.springframework.ui.Model;
 20 import org.springframework.web.bind.annotation.RequestMapping;
 21 import org.springframework.web.multipart.MultipartFile;
 22 
 23 @Controller
 24 public class UpLoadController {
 25     
 26     //跳转到文件上传页面
 27     @RequestMapping("/toUpLoad")
 28     public String toUpLoad()
 29     {
 30         return "upLoad";
 31     }
 32     
 33     //单文件上传
 34     @RequestMapping("/upLoad")
 35     public String upLoad(MultipartFile img) throws IllegalStateException, IOException
 36     {
 37         //获取原始文件名
 38         String source=img.getOriginalFilename();
 39         //获取文件的大小
 40         long size= img.getSize();
 41         //获取文件的类型     
 42         String type= img.getContentType();
 43         System.out.println(source+"	"+size+"	"+type);
 44         
 45         /*
 46         //保存的路劲有可能不存在
 47         File savePath=new File("D:\upload");
 48         
 49         if(!savePath.exists())
 50         {
 51             //如果不存在就创建文件夹
 52             savePath.mkdirs();
 53         }
 54         
 55          img.transferTo(new File(savePath,source));*/
 56         
 57        
 58         if(!img.isEmpty())
 59         {
 60             img.transferTo(new File("D:\",source));
 61         }
 62         return "success";
 63     }
 64     
 65     //多文件上传
 66     @RequestMapping("/upLoad1")
 67     public String upLoad1(MultipartFile[] imgs) throws IllegalStateException, IOException
 68     {
 69         if(imgs!=null)
 70         {
 71              //保存的路劲有可能不存在
 72             File savePath=new File("D:\upload");
 73             
 74             if(!savePath.exists())
 75             {
 76                 //如果不存在就创建文件夹
 77                 savePath.mkdirs();
 78             }
 79             
 80              for(MultipartFile img:imgs)
 81              {
 82                 //获取原始文件名
 83                  String source=img.getOriginalFilename();
 84                  //获取文件的大小
 85                  long size= img.getSize();
 86                  //获取文件的类型     
 87                  String type= img.getContentType();
 88                  System.out.println(source+"	"+size+"	"+type);
 89                  //将文件保存到指定路径
 90                  img.transferTo(new File(savePath,source));
 91              }
 92         }
 93         return "success";
 94     }
 95 
 96 
 97     //单文件上传并显示图片
 98     @RequestMapping("/load")
 99     public String load(MultipartFile imgs,HttpServletRequest request,Model model) throws IllegalStateException, IOException
100     {
101          //获取文件的原始名字
102          String    fileName=imgs.getOriginalFilename();
103         
104          //得到项目文件的真实路径
105          String    realPath=request.getServletContext().getRealPath("upload");
106          if(!imgs.isEmpty())
107          {
108              imgs.transferTo(new File(realPath, fileName));
109          }
110          //上传到服务器下文件的路径
111          String path= request.getContextPath()+"/upload/"+fileName;
112          model.addAttribute("path",path);
113          return "success";
114         
115     }
116     
117     
118     
119     //文件下载1
120     @RequestMapping("/downLoad")
121     public void downLoad(HttpServletResponse response) throws IOException
122     {
123         File file=new File("D://图片//645.jpg");
124         //乱码解决
125         String fileName=new String(file.getName().getBytes("UTF-8"),"ISO-8859-1" );
126         //设置响应内容信息
127         response.setContentType("application/octet-stream");
128         //设置响应头信息
129         response.setHeader("content-disposition", "attachment;filename="+fileName);
130         //获取输出流
131         OutputStream out=response.getOutputStream();
132         //创建输入流
133         InputStream in=new FileInputStream(file);
134         //数据写出
135         byte[] b=new byte[1024];
136         int len=0;
137         while((len=in.read(b))!=-1)
138         {
139             out.write(b, 0, len);
140         }
141         
142         out.close();
143         in.close();
144     }
145     
146     /*
147      * 将二进制数据封装到响应中
148      */
149     //文件下载2
150     @RequestMapping("/downLoad2")
151     public ResponseEntity<byte[]> downLoad2() throws IOException
152     {
153         File file=new File("D://图片//645.jpg");
154         //乱码解决
155         String fileName=new String(file.getName().getBytes("UTF-8"),"ISO-8859-1" );
156         //创建HttpHeader对象
157         HttpHeaders headers=new HttpHeaders();
158         headers.setContentDispositionFormData("attachment", fileName);
159         headers.setContentType(MediaType.APPLICATION_OCTET_STREAM);
160         //创建字节数组
161         byte[] b=FileUtils.readFileToByteArray(file);
162         //创建ResponseEntity对象
163         ResponseEntity<byte[]> entity=new ResponseEntity<byte[]>(b,headers, HttpStatus.OK);
164         return entity;
165     }
166 }
    View Code
     1 package com.zhidi.controller;
 2 
 3 import org.springframework.stereotype.Controller;
 4 import org.springframework.ui.ModelMap;
 5 import org.springframework.validation.Errors;
 6 import org.springframework.validation.annotation.Validated;
 7 import org.springframework.web.bind.annotation.RequestMapping;
 8 
 9 import com.zhidi.entity.User;
10 
11 @Controller
12 public class ValidationCotroller {
13     
14     //其中@Valid或@Validated注解用于指定对User数据进行校验
15     //其中Errors用于存储校验时的错误信息，如果hasErrors()返回true，说明本次校验存在不符合校验规则的错误信息。
16     //Errors要紧跟在对象后面
17     @RequestMapping("/valid")
18     public String valid(@Validated User user,Errors error,ModelMap model)
19     {
20         if(error.hasErrors())
21         {
22             model.put("error",error );
23             
24             return "error";
25         }
26         System.out.println(user);
27         return "success";
28     }
29 
30 }
    View Code
      1 package com.zhidi.controller;
  2 
  3 import java.util.Date;
  4 
  5 import javax.servlet.http.HttpServletRequest;
  6 import javax.servlet.http.HttpServletResponse;
  7 import javax.servlet.http.HttpSession;
  8 
  9 import org.springframework.format.annotation.DateTimeFormat;
 10 import org.springframework.stereotype.Controller;
 11 import org.springframework.ui.ModelMap;
 12 import org.springframework.web.bind.annotation.PathVariable;
 13 import org.springframework.web.bind.annotation.RequestMapping;
 14 import org.springframework.web.bind.annotation.RequestMethod;
 15 import org.springframework.web.bind.annotation.RequestParam;
 16 import com.zhidi.entity.Student;
 17 
 18 //在类上使用@RequestMapping相当于相对路径，访问时为http://localhost:8080/springmvc01/user/hello4.do
 19 @RequestMapping("/user")
 20 @Controller
 21 public class WelController {
 22     // 方法上使用@RequestMapping相当于绝对路径
 23     @RequestMapping("/hello")
 24     public String hello() {
 25         return "welcome";
 26     }
 27 
 28     // 限于当前方法只用于get方式请求，并且请求参数中包含参数username（访问时要加上参数）
 29     @RequestMapping(value = "/hello1", method = RequestMethod.GET, params = "username")
 30     public String hello1() {
 31         return "welcome";
 32     }
 33 
 34     @RequestMapping("/hello2")
 35     public String hello2(HttpServletRequest request, HttpServletResponse response) {
 36         // 通过请求对象获取请求参数
 37         String name = request.getParameter("username");
 38         request.setAttribute("username", name);
 39         return "welcome";
 40     }
 41 
 42     @RequestMapping("/hello3")
 43     public String hello3(HttpSession session) {
 44         session.setAttribute("username", "赵四");
 45         return "welcome";
 46     }
 47 
 48     @RequestMapping("/hello4")
 49     public String hello4(ModelMap map) {
 50         map.addAttribute("username", "刘能");
 51         return "welcome";
 52     }
 53 
 54     // 普通参数设定
 55     @RequestMapping("/hello5")
 56     public String hello5(String username) {
 57         System.out.println(username);
 58         return "welcome";
 59     }
 60 
 61     // 当URL的参数名和方法里的形参名不一致时用@RequestParam，里面的值要和URL的参数名一致
 62     @RequestMapping("/hello6")
 63     public String hello6(@RequestParam("name") String username) {
 64         System.out.println(username);
 65         return "welcome";
 66     }
 67 
 68     // 访问表单
 69     @RequestMapping("/hello7")
 70     public String hello7() {
 71         return "welcome";
 72     }
 73 
 74     // 将请求参数传到pojo上
 75     @RequestMapping("/hello8")
 76     public String hello8(Student stu) {
 77         System.out.println(stu);
 78         return "welcome";
 79     }
 80 
 81     @RequestMapping("/hello9")
 82     public String hello9(@PathVariable("id") Integer id) {
 83         System.out.println(id);
 84         return "welcome";
 85     }
 86 
 87     @RequestMapping("/test")
 88     public String test(@DateTimeFormat(pattern = "yyyy-MM-dd") Date date) {
 89         System.out.println(date);
 90         return "welcome";
 91     }
 92 
 93     // 自定义时间转化
 94     @RequestMapping("/test1")
 95     public String test1(Date date) {
 96         System.out.println(date);
 97         return "welcome";
 98     }
 99     
100     //将URL中占位符的值绑定到方法的形参上,访问路径为http://localhost:8080/springmvc01/user/2/test2.do
101     @RequestMapping("/{id}/test2")
102     public String test2(@PathVariable("id")Integer id)
103     {
104         System.out.println(id);
105         return "welcome";
106     }
107     
108     //http://localhost:8080/springmvc01/user/2/test3/admin.do
109     @RequestMapping("/{id}/test3/{name}")
110     public String test3(@PathVariable("id")Integer id,@PathVariable("name")String name)
111     {
112         System.out.println(id+":"+name);
113         return "welcome";
114     }
115     
116     //通过”forward:逻辑视图” 指定以转发形式转向到对应物理视图
117     @RequestMapping("/forward")
118     public String forward()
119     {
120         return "forward:2/test3/admin.do";
121     }
122     
123     //通过”redirect:逻辑视图” 指定以重定向形式转向到对应物理视图
124     @RequestMapping("/redirect")
125     public String redirecr()
126     {
127         return "redirect:toInfo.do";
128     }
129     
130     @RequestMapping("/toInfo")
131     public String toInfo()
132     {
133         return "welcome";
134     }
135     
136     
137     
138 }
    View Code

    4.配置文件

    1 name.notNull=u540Du5B57u4E0Du80FDu4E3Au7A7A
2 password.notNull=u5BC6u7801u4E0Du80FDu4E3Au7A7A
3 email.error=u90AEu7BB1u683Cu5F0Fu4E0Du5BF9
    View Code
     1 <?xml version="1.0" encoding="UTF-8"?>
 2 <beans xmlns="http://www.springframework.org/schema/beans"
 3     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc"
 4     xmlns:context="http://www.springframework.org/schema/context"
 5     xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd
 6         http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
 7         http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd">
 8     <!-- 扫描控制器所在的包 -->
 9     <context:component-scan base-package="com.zhidi.controller" />
10     <!-- 开启springmvc注解 -->
11     <mvc:annotation-driven conversion-service="conversionService"
12         validator="validator" />
13 
14     <!-- 视图解析器配置 -->
15     <bean
16         class="org.springframework.web.servlet.view.InternalResourceViewResolver">
17         <!-- 前缀 -->
18         <property name="prefix" value="/WEB-INF/page/" />
19         <!-- 后缀 -->
20         <property name="suffix" value=".jsp" />
21     </bean>
22 
23     <!--将自定义时间转化器纳入Spring IOC容器 配置固定的 -->
24     <!-- <bean id="conversionService" class="org.springframework.format.support.FormattingConversionServiceFactoryBean"> 
25         <property name="converters"> <bean class="com.zhidi.util.DateFormat" /> </property> 
26         </bean> -->
27     <!-- 将自定义转换器纳入Spring IOC容器管理，在配置文件端改变时间格式 -->
28     <bean id="conversionService"
29         class="org.springframework.format.support.FormattingConversionServiceFactoryBean">
30         <property name="converters">
31             <bean class="com.zhidi.util.DateFormat1">
32                 <property name="pattern" value="yyyy-MM-dd" />
33             </bean>
34         </property>
35     </bean>
36 
37     <!-- 配置MultipartResolver文件上传 -->
38     <bean id="multipartResolver"
39         class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
40         <property name="defaultEncoding" value="UTF-8" />
41         <!-- 设置最大上传文件大小 -->
42         <property name="maxUploadSize" value="5242880" />
43     </bean>
44 
45     <!-- 注册验证工厂 -->
46     <bean id="validator"
47         class="org.springframework.validation.beanvalidation.LocalValidatorFactoryBean">
48         <!-- 适应hibernate验证 -->
49         <property name="providerClass" value="org.hibernate.validator.HibernateValidator" />
50         <!-- 如果不指定，会默认去找classpath下的validationMessage -->
51         <property name="validationMessageSource" ref="messageSource" />
52     </bean>
53 
54     <!-- 国际化消息文件 -->
55     <bean id="messageSource"
56         class="org.springframework.context.support.ReloadableResourceBundleMessageSource">
57         <!-- 指定消息文件的路径，要在src下 -->
58         <property name="basename" value="classpath:message" />
59         <property name="defaultEncoding" value="UTF-8" />
60         <property name="cacheSeconds" value="60" />
61         <property name="useCodeAsDefaultMessage" value="false" />
62     </bean>
63 
64     <!--方法一：简单异常从处理器 -->
65     <!-- <bean
66         class="org.springframework.web.servlet.handler.SimpleMappingExceptionResolver">
67         定义默认的异常处理页面
68         <property name="defaultErrorView" value="error" />
69         定义需要处理的异常 key用类名或完整的路径，异常页面作为值
70         <property name="exceptionMappings">
71             <props>
72                 <prop key="java.lang.ArrayIndexOutOfBoundsException">error1</prop>
73             </props>
74         </property>
75         定义用来获取异常信息的变量名 默认为 exception
76         <property name="exceptionAttribute" value="ex"></property>
77     </bean> -->
78     
79     <!-- 方法二：配置实现HandlerExceptionResolver接口的自定义异常处理器 -->
80      <bean class="com.zhidi.util.ExceptionResolver"></bean> 
81     
82     <!--方法三： 通过注解来处理异常的配置 -->
83     <!-- <bean class="com.zhidi.controller.TestExceptionController"></bean> -->
84 </beans>
    View Code
     1 <?xml version="1.0" encoding="UTF-8"?>
 2 <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 3     xmlns="http://java.sun.com/xml/ns/javaee"
 4     xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
 5     id="WebApp_ID" version="3.0">
 6     <!-- spring mvc前端控制器 -->
 7     <servlet>
 8         <servlet-name>springmvc</servlet-name>
 9         <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
10         <!--如果没有设置参数，会在WEB-INF下查找前端控制器名-servlet.xml作为SpringMVC的默认配置文件 -->
11         <init-param>
12             <param-name>contextConfigLocation</param-name>
13             <param-value>classpath:spring-mvc.xml</param-value>
14         </init-param>
15         <load-on-startup>1</load-on-startup>
16     </servlet>
17     <servlet-mapping>
18         <servlet-name>springmvc</servlet-name>
19         <url-pattern>*.do</url-pattern>
20     </servlet-mapping>
21 
22     <!-- 异常处理 -->
23     <error-page>
24     <!-- 异常的状态 -->
25     <error-code>404</error-code>
26     <location>/exception.jsp</location>
27     <!-- 异常的类型 -->
28     <!--  <exception-type >java.lang.NullPiontException</exception-type>
29      <location>/exception.jsp</location>
30       -->
31     </error-page>
32    
33 </web-app>
    View Code

    5.前端页面

     1 <%@ page language="java" contentType="text/html; charset=UTF-8"
 2     pageEncoding="UTF-8"%>
 3 <%
 4     String path = request.getContextPath();
 5     String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort()
 6             + path + "/";
 7 %>
 8 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 9 <html>
10 <script type="text/javascript" src="static/jquery/jquery.min.js"></script>
11 <head>
12 <base href="<%=basePath%>">
13 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
14 <title>Insert title here</title>
15 </head>
16 <body>
17     <button type="button" id="b1">点击</button>
18     <script type="text/javascript">
19         $("#b1").click(function() {
20 
21             $.ajax({
22 
23                 url : "ajax.do",
24                 data : {},
25                 dateType : "JSON",
26                 type : "POST",
27                 contentType : "application/json",
28                 success : function(data) {
29                     if (data.success) {
30                         alert(data.msg);
31                     } else {
32                         alert(data.msg);
33                     }
34 
35                 },
36 
37             });
38 
39         });
40     </script>
41 </body>
42 </html>
    View Code
     1 <%@ page language="java" contentType="text/html; charset=UTF-8"
 2     pageEncoding="UTF-8"%>
 3 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 4 <html>
 5 <head>
 6 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 7 <title>Insert title here</title>
 8 </head>
 9 <body>
10 <a href="/springmvc/downLoad2.do">文件下载</a>
11 </body>
12 </html>
    View Code
     1 <%@ page language="java" contentType="text/html; charset=UTF-8"
 2     pageEncoding="UTF-8"%>
 3 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 4 <html>
 5 <head>
 6 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 7 <title>Insert title here</title>
 8 </head>
 9 <body>
10 ${stu.id }
11 </body>
12 </html>
    View Code
     1 <%@ page language="java" contentType="text/html; charset=UTF-8"
 2     pageEncoding="UTF-8"%>
 3 <%@taglib uri="http://www.springframework.org/tags/form" prefix="form"%>
 4 <%
 5     String path = request.getContextPath();
 6     String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort()
 7             + path + "/";
 8 %>
 9 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
10 <html>
11 <head>
12 <base href="<%=basePath%>">
13 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
14 <title>Insert title here</title>
15 </head>
16 
17 ${error }
18 <body>
19     <form:form commandName="user">
20         <form:errors path="name" />
21         <form:errors path="password" />
22         <form:errors path="email" />
23 
24     </form:form>
25 </body>
26 </html>
    View Code
     1 <%@ page language="java" contentType="text/html; charset=UTF-8"
 2     pageEncoding="UTF-8"%>
 3     <%
 4     String path = request.getContextPath();
 5     String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort()
 6             + path + "/";%>
 7 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 8 <html>
 9 <head>
10 <base href="<%=basePath%>">
11 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
12 <title>Insert title here</title>
13 </head>
14 <body>
15 出错了
16 </body>
17 </html>
    View Code
     1 <%@ page language="java" contentType="text/html; charset=UTF-8"
 2     pageEncoding="UTF-8"%>
 3 <%
 4     String path = request.getContextPath();
 5     String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort()
 6             + path + "/";
 7 %>
 8 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 9 <html>
10 <head>
11 <base href="<%=basePath%>">
12 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
13 <title>Insert title here</title>
14 </head>
15 <script type="text/javascript" src="static/jquery/jquery.min.js"></script>
16 <body>
17     <button type="button" id="b1">点我哦，传JSON</button>
18 
19 </body>
20 <script type="text/javascript">
21     $("#b1")
22             .click(
23                     function() {
24 
25                         var data = '{"id":"1","userName":"admin","sex":"男","age":"33","date":"1992-2-3"}';
26                         $.ajax({
27 
28                             url : "json.do",
29                             data : data,
30                             dateType : "JSON",
31                             type : "POST",
32                             contentType : "application/json",
33                             success : function(data) {
34                                 
35                             },
36 
37                         });
38 
39                     });
40 </script>
41 </html>
    View Code
     1 <%@ page language="java" contentType="text/html; charset=UTF-8"
 2     pageEncoding="UTF-8"%>
 3 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 4 <html>
 5 <head>
 6 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 7 <title>Insert title here</title>
 8 </head>
 9 <body>
10 <form action="/springmvc01/login.do" method="post">
11 <input type="text" name="id"/><br>
12 <input type="text" name="userName"><br>
13 <input type="submit" value="提交">
14 
15 </form>
16 </body>
17 </html>
    View Code
     1 <%@ page language="java" contentType="text/html; charset=UTF-8"
 2     pageEncoding="UTF-8"%>
 3 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 4 <html>
 5 <head>
 6 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 7 <title>Insert title here</title>
 8 </head>
 9 <body>
10 ${name }
11 
12 ${Student.id }
13 </body>
14 </html>
    View Code
     1 <%@ page language="java" contentType="text/html; charset=UTF-8"
 2     pageEncoding="UTF-8"%>
 3 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 4 <html>
 5 <head>
 6 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 7 <title>Insert title here</title>
 8 </head>
 9 <body>
10 ${name }
11 </body>
12 </html>
    View Code
     1 <%@ page language="java" contentType="text/html; charset=UTF-8"
 2     pageEncoding="UTF-8"%>
 3 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 4 <html>
 5 <head>
 6 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 7 <title>Insert title here</title>
 8 </head>
 9 <body>
10 杀驴逼
11 ${student.userName}
12 ${student.age }
13 </body>
14 </html>
    View Code
     1 <%@ page language="java" contentType="text/html; charset=UTF-8"
 2     pageEncoding="UTF-8"%>
 3 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 4 <html>
 5 <head>
 6 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 7 <title>Insert title here</title>
 8 </head>
 9 <body>
10 成功！！！！
11 异常信息为：<%=request.getAttribute("e") %>
12 <img alt="" src="${path }">
13 </body>
14 </html>
    View Code
     1 <%@ page language="java" contentType="text/html; charset=UTF-8"
 2     pageEncoding="UTF-8"%>
 3 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 4 <html>
 5 <head>
 6 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 7 <title>Insert title here</title>
 8 </head>
 9 <body>
10 <form action="/springmvc01/load.do" enctype="multipart/form-data" method="post">
11 请选择文件：<input type="file" name="imgs"><br>
12         <!--   <input type="file" name="imgs"><br> -->
13 <input type="submit" value="上传文件">
14 
15 </form>
16 </body>
17 </html>
    View Code
     1 <%@ page language="java" contentType="text/html; charset=UTF-8"
 2     pageEncoding="UTF-8"%>
 3 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 4 <html>
 5 <head>
 6 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 7 <title>Insert title here</title>
 8 </head>
 9 <body>
10 
11 ${username}
12 ${name}
13 
14 <form action="/springmvc01/user/hello8.do" method="post">
15 序号：<input type="text" name="id"/><br/>
16 姓名：<input type="text" name="userName"/><br/>
17 性别：<input type="radio" value="0" name="sex">男
18      <input type="radio" value="1" name="sex">女<br/>
19 年龄：<input type="text" name="age"/><br/>
20 生日：<input type="text" name="date"><br/>
21 <input type="submit" value="提交">
22 
23 </form>
24 </body>
25 
26 </html>
    View Code
     1 <%@ page language="java" contentType="text/html; charset=UTF-8"
 2     pageEncoding="UTF-8"%>
 3     <%
 4     String path = request.getContextPath();
 5     String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort()
 6             + path + "/";%>
 7 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 8 <html>
 9 <head>
10 <base href="<%=basePath%>">
11 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
12 <title>Insert title here</title>
13 </head>
14 <body>
15 出异常了
16 </body>
17 </html>
    View Code

    6.布局和导包

     

    二、

    1.controller

     1 package com.zhidi.controller;
 2 
 3 import javax.servlet.http.HttpServletRequest;
 4 import javax.servlet.http.HttpServletResponse;
 5 
 6 import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;
 7 
 8 import com.zhidi.entity.User;
 9 /*
10  * 继承于HandlerInterceptorAdapter类的自定义拦截器
11  */
12 public class ExtendsInterceptor extends HandlerInterceptorAdapter {
13 
14     @Override
15     public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
16             throws Exception {
17         
18         User user= (User) request.getSession().getAttribute("user");
19         if(user!=null)
20         {
21             System.out.println("----------登录成功--------");
22             return true;
23         }
24         System.out.println("-------请先登录------");
25         response.sendRedirect(request.getContextPath()+"/toLogin.do?msg=123");
26         return false;
27     }
28 }
    View Code
     1 package com.zhidi.controller;
 2 
 3 import javax.servlet.http.HttpServletRequest;
 4 import javax.servlet.http.HttpServletResponse;
 5 
 6 import org.springframework.web.servlet.HandlerInterceptor;
 7 import org.springframework.web.servlet.ModelAndView;
 8 /*
 9  * 实现接口HandlerInterceptor的拦截器
10  */
11 public class ImpInterceptor implements HandlerInterceptor {
12 
13     @Override
14     public void afterCompletion(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2, Exception arg3)
15             throws Exception {
16         
17     }
18 
19     @Override
20     public void postHandle(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2, ModelAndView arg3)
21             throws Exception {
22         
23     }
24 
25     @Override
26     public boolean preHandle(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2) throws Exception {
27         return false;
28     }
29 
30 }
    View Code
     1 package com.zhidi.controller;
 2 
 3 import java.util.HashMap;
 4 import java.util.Map;
 5 
 6 import org.springframework.web.bind.annotation.RequestMapping;
 7 import org.springframework.web.bind.annotation.RestController;
 8 
 9 /*
10  * RESTful风格的CRUB操作控制器
11  */
12 //@RestController是@Controller和@RequestBody的结合
13 @RestController
14 public class RestfulController {
15     
16     @RequestMapping("/rest")
17     public Map<String, Object> rest()
18     {
19         Map map=new HashMap();
20         return map;
21     }
22        
23 }
    View Code
     1 package com.zhidi.controller;
 2 
 3 import javax.servlet.http.HttpSession;
 4 
 5 import org.springframework.stereotype.Controller;
 6 import org.springframework.web.bind.annotation.RequestMapping;
 7 import org.springframework.web.servlet.mvc.support.RedirectAttributes;
 8 
 9 import com.zhidi.entity.User;
10 
11 @Controller
12 public class UserController {
13 
14     //去登录页面
15     @RequestMapping("/toLogin")
16     public String toLogin()
17     {
18         return "login";
19     }
20     
21     //登录
22     @RequestMapping("/login")
23     public String login(User user,HttpSession session,RedirectAttributes attributes)
24     {
25         if(user!=null&&"admin".equals(user.getName())&&"123".equals(user.getPassword()))
26         {
27         
28             return "success";
29         }
30         session.setAttribute("user", user);
31         attributes.addFlashAttribute("msg","用户名或密码错误");
32         return "redirect:toLogin.do";
33     }
34     
35     //登出
36     @RequestMapping("/logout")
37     public String logout(HttpSession session)
38     {
39         session.invalidate();
40         return "redirect:toLogin.do";
41     }
42     
43     //测试
44     @RequestMapping("/test")
45     public String test()
46     {
47         return "success";
48     }
49 }
    View Code

    2.entity

     1 package com.zhidi.entity;
 2 
 3 public class User {
 4     
 5     private String name;
 6     private String password;
 7     public String getName() {
 8         return name;
 9     }
10     public void setName(String name) {
11         this.name = name;
12     }
13     public String getPassword() {
14         return password;
15     }
16     public void setPassword(String password) {
17         this.password = password;
18     }
19     
20 
21 }
    View Code

    3.配置文件

     1 <?xml version="1.0" encoding="UTF-8"?>
 2 <beans xmlns="http://www.springframework.org/schema/beans"
 3     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
 4     xmlns:mvc="http://www.springframework.org/schema/mvc"
 5     xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd
 6         http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
 7         http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd">
 8     <!-- 扫描控制器所在的包 -->
 9     <context:component-scan base-package="com.zhidi.controller" />
10     <!-- 开启springmvc注解 -->
11     <mvc:annotation-driven></mvc:annotation-driven>
12     <!-- 视图解析器配置 -->
13     <bean
14         class="org.springframework.web.servlet.view.InternalResourceViewResolver">
15         <property name="prefix" value="/WEB-INF/page/" />
16         <property name="suffix" value=".jsp" />
17     </bean>
18 
19     <!-- 配置继承拦截器 -->
20     <!-- <mvc:interceptors>
21         定义在interceptors下的拦截器会对所有的请求进行拦截
22         <bean class="com.zhidi.controller.Interceptor" />
23         对特定的请求进行拦截
24         <mvc:interceptor>
25             拦截所有
26             <mvc:mapping path="/**" />
27             排除拦截
28             <mvc:exclude-mapping path="/toLogin.do" />
29             <mvc:exclude-mapping path="/login.do" />
30             <bean class="com.zhidi.controller.ExtendsInterceptor" />
31         </mvc:interceptor>
32     </mvc:interceptors> -->
33 
34     <!-- 配置实现接口的拦截器 -->
35     <!-- <mvc:interceptors>
36         <bean class="com.zhidi.controller.ImpInterceptor" />
37     </mvc:interceptors> -->
38 </beans>
    View Code
     1 <?xml version="1.0" encoding="UTF-8"?>
 2 <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
 3  <!-- spring mvc前端控制器 -->
 4  
 5  <!-- The front controller of this Spring Web application, responsible for handling all application requests -->
 6     <servlet>
 7         <servlet-name>springDispatcherServlet</servlet-name>
 8         <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
 9         <init-param>
10             <param-name>contextConfigLocation</param-name>
11             <param-value>classpath:spring-mvc.xml</param-value>
12         </init-param>
13         <load-on-startup>1</load-on-startup>
14     </servlet>
15 
16     <!-- Map all requests to the DispatcherServlet for handling -->
17     <servlet-mapping>
18         <servlet-name>springDispatcherServlet</servlet-name>
19         <url-pattern>*.do</url-pattern>
20     </servlet-mapping>
21  
22 
23 </web-app>
    View Code

    4.前端页面

     1 <%@ page language="java" contentType="text/html; charset=UTF-8"
 2     pageEncoding="UTF-8"%>
 3     <%
 4     String path = request.getContextPath();
 5     String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort()
 6             + path + "/";%>
 7 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 8 <html>
 9 <head>
10 <base href="<%=basePath%>">
11 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
12 <title>Insert title here</title>
13 </head>
14 <body>
15 ${param.msg }
16 ${msg }
17 <form action="login.do" method="post">
18 用户名：<input type="text" name="name"><br>
19 密   码：<input type="password" name="password"><br>
20 <button type="submit">登录</button>
21 </form>
22 </body>
23 </html>
    View Code
     1 <%@ page language="java" contentType="text/html; charset=UTF-8"
 2     pageEncoding="UTF-8"%>
 3     <%
 4     String path = request.getContextPath();
 5     String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort()
 6             + path + "/";%>
 7 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 8 <html>
 9 <head>
10 <base href="<%=basePath%>">
11 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
12 <title>Insert title here</title>
13 </head>
14 <body>
15 成功！！！
16 </body>
17 </html>
    View Code
  • 相关阅读:
    用自己的算法实现startsWith和endsWith功能
    随机生成4位验证码，由用户输入并验证是否输入正确，如果输入错误就生成新的验证码让用户重新输入，最多输入5次
    二分法（网上查找结果）
    模拟摇奖：从1-36中随机抽出8个不重复的数字
    冒泡排序
    输入年龄输出年龄段
    水仙花数
    百钱买百鸡
    百马百担的问题
    控制台输出九九乘法表
  • 原文地址：https://www.cnblogs.com/zclqian/p/7511803.html
Copyright © 2020-2023  润新知