SpringBoot使用JSP
1.创建一个webapp子项目
2.导入依赖
<!-- 配置springboot的父节点依赖，之后引入就不需要添加version配置了！ springboot会自动选择最合适的版本进行添加依赖 --> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.4.1.RELEASE</version> </parent> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <!--指定JDK版本 我们使用的是1.8，不配置默认环境是1.6 --> <java.version>1.8</java.version> </properties> <dependencies> <dependency> <!-- spring-boot-starter-web是为我们提供了包括mvc,aop等需要的一些jar --> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> <!-- 因为我们已经配置了 parent 中的version 所以这里不需要指定version了 --> </dependency> <!-- Spring-boot-devtools --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-devtools</artifactId> <optional>true</optional> </dependency> <!-- 配置servlet需要的依赖 --> <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> </dependency> <!-- 配置jstl标签库需要的依赖 --> <dependency> <groupId>javax.servlet</groupId> <artifactId>jstl</artifactId> </dependency> <!-- 添加tomcat的支持 --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-tomcat</artifactId> </dependency> <dependency> <groupId>org.apache.tomcat.embed</groupId> <artifactId>tomcat-embed-jasper</artifactId> </dependency> </dependencies>
3.创建一个application.yml文件
spring:
mvc:
view:
suffix: .jsp
prefix: /jsp/
4.编辑Controller
@Controller @RequestMapping("/jsp") public class JSPController { @RequestMapping("/first") public String jsp(Model model){ model.addAttribute("name","张三"); return "index"; } }
5.创建一个jsp文件
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>hehe</title>
</head>
<body>
<h2>呵呵,欢迎:${name}1234</h2>
</body>
</html>
6.启动运行
SpringBoot使用thymeleaf
1.pom文件中增加thymeleaf的依赖和版本号
<!-- 添加thymeleaf模版的依赖 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<thymeleaf.version>3.0.0.RELEASE</thymeleaf.version>
<thymeleaf-layout-dialect.version>2.0.0</thymeleaf-layout-dialect.version>
2.application.yml文件中新增thymeleaf配置
3.在resources中创建templates文件夹
并且创建一个index.html
4.创建一个entity Student实体类
public class Student { private Integer id; private String name; }
5.编写Controller控制器
@Controller public class thyController { @RequestMapping("/thy") public String thy(Model model){ List<Student> list = new ArrayList<>(); Student stu1 = new Student(1,"张三"); Student stu2 = new Student(2,"李四"); Student stu3 = new Student(3,"王大爷是弟弟，垃圾"); list.add(stu1); list.add(stu2); list.add(stu3); model.addAttribute("stulist",list); return "index"; } }
6.书写index.html中的代码
<!DOCTYPE html> <html lang="en" xmlns:th="http://www.w3.org/1999/xhtml"> <head> <meta charset="UTF-8"> <title>temples</title> </head> <body> <table border="1"> <tr> <td>学生编号</td> <td>学生姓名</td> </tr> <tr th:each="stu:${stulist}"> <td th:text="${stu.id}"></td> <td th:text="${stu.name}"></td> </tr> </table> </body> </html>
7.运行效果
SpringBoot 与JPA
1. 实现数据的增删改查
1.1：在pom文件中引入需要的依赖
<!-- 引入mysql需要的依赖 --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> </dependency> <!-- 引入spring data jpa需要的依赖 --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-jpa</artifactId> </dependency>
2.创建resources文件夹创建application.yml文件进行编写
##数据库四大连接参数
spring:
datasource:
driver-class-name: com.mysql.jdbc.Driver
url: jdbc:mysql:///springdatajpa
username: root
password: 123456
##jpa表的生成策略
jpa:
hibernate:
ddl-auto: update
3.编写entity
@Entity public class Grade { @Id @GeneratedValue(strategy= GenerationType.AUTO) private Integer grade_id; private String grade_name; public Integer getGrade_id() { return grade_id; } public void setGrade_id(Integer grade_id) { this.grade_id = grade_id; } public String getGrade_name() { return grade_name; } public void setGrade_name(String grade_name) { this.grade_name = grade_name; } }
4.编写dao层
/** * CrudRepository<实体，主键数据类型> */ @Repository public interface IGradeMapper extends CrudRepository<Grade,Integer> { }
5.编写增删改查的方法service
public interface IGradeService { public Grade insertGrade(Grade grade); public Grade updateGrade(Grade grade); public void deleteGrade(Integer id); public Iterable<Grade> getAll(); }
6.编写实现类
@Service("iGradeService")
public class IGradeServcieImpl implements IGradeService {
@Resource
private IGradeMapper iGradeMapper;
@Override
public Grade insertGrade(Grade grade) {
return iGradeMapper.save(grade);
}
@Override
public Grade updateGrade(Grade grade) {
return iGradeMapper.save(grade);
}
@Override
public void deleteGrade(Integer id) {
iGradeMapper.delete(id);
}
@Override
public Iterable<Grade> getAll() {
return iGradeMapper.findAll();
}
}
7.创建Controller层进行编写
@RestController @RequestMapping("/IGradeController") public class IGradeController { @Resource private IGradeService iGradeService; //新增数据 @RequestMapping("/insertGrade") public Grade insertGrade(){ Grade grade=new Grade(); grade.setGrade_name("Y2"); return iGradeService.insertGrade(grade); } //修改数据 @RequestMapping("/updateGrade") public Grade updateGrade(){ Grade grade=new Grade(); grade.setGrade_id(2); grade.setGrade_name("S3"); return iGradeService.updateGrade(grade); } //删除数据 @RequestMapping("/deleteGrade") public void deleteGrade(){ iGradeService.deleteGrade(1); } //查看数据 @RequestMapping("/getAllGrade") public Iterable<Grade> getAllGrade(){ return iGradeService.getAll(); } }
8.运行查看效果
这里已经添加成功了我们可以看一下数据库
现在我们来看一下修改
可以看到现在编号为3的数据值为S2
访问http://localhost:8080/IGradeController/updateGrade
接下来进行删除
访问http://localhost:8080/IGradeController/deleteGrade
接下来进行查看
