十二.spring-boot使用spring-boot-freemarker

①、在springMVC中：它代表着view层组件

②、为什么使用freemarker：简单容易学、逻辑分明

③、freemarker优点：它不依赖servlet、网络或者web环境

一、创建一个maven web project

二、检查freemarker包是否已经添加

三、编写测试类

1、新建一个用户数据模型SysUser

package com.example.entity;

public class SysUser {
    private long id;
    private String name;
    private String phone;
    
    
    public SysUser() {
    }
    public SysUser(long id, String name, String phone) {
        this.id = id;
        this.name = name;
        this.phone = phone;
    }
    public long getId() {
        return id;
    }
    public void setId(long id) {
        this.id = id;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getPhone() {
        return phone;
    }
    public void setPhone(String phone) {
        this.phone = phone;
    }
    @Override
    public String toString() {
        return "SysUser [id=" + id + ", name=" + name + ", phone=" + phone + "]";
    }
    
    
}

2、编写controller类

package com.example.controller;

import java.util.ArrayList;
import java.util.List;

import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;

import com.example.entity.SysUser;

@Controller
public class Hello {
    
    @RequestMapping("hello")
    public String hello(Model m){
        m.addAttribute("name", "spring-boot");
        return "hello";
    }
    @RequestMapping("sysUser")
    public String user(Model m){
        List<SysUser> list = new ArrayList<SysUser>();
        SysUser u1 = new SysUser(0001, "hello1", "11111111111111111");
        SysUser u2 = new SysUser(0002, "hello2", "22222222222222222");
        SysUser u3 = new SysUser(0003, "hello3", "33333333333333333");
        list.add(u1);
        list.add(u2);
        list.add(u3);
        m.addAttribute("userList", list);
        m.addAttribute("sysUser", "SysUser");
        return "sysUser/list";
    }
}

3、配置application.properties文件

########################################################
###FREEMARKER (FreeMarkerAutoConfiguration)
########################################################
spring.freemarker.allow-request-override=false
spring.freemarker.cache=true
spring.freemarker.check-template-location=true
spring.freemarker.charset=UTF-8
spring.freemarker.content-type=text/html
spring.freemarker.expose-request-attributes=false
spring.freemarker.expose-session-attributes=false
spring.freemarker.expose-spring-macro-helpers=false
#spring.freemarker.prefix=
#spring.freemarker.request-context-attribute=
#spring.freemarker.settings.*=
spring.freemarker.suffix=.ftl
spring.freemarker.template-loader-path=classpath:/templates/
#comma-separated list
#spring.freemarker.view-names= # whitelist of view names that can be resolved

4、编写.ftl模型

说明：我这里使用到的bootstrap-3.3.7方便好看，新建一个sysuser的视图层文件，保证良好的规则

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:th="http://www.thymeleaf.org"
      xmlns:sec="http://www.thymeleaf.org/thymeleaf-extras-springsecurity3">
    <head>
        <meta content="text/html;charset=utf-8"></meta>
        <title>Hello World!</title>
        <script sec="../jquery-2.1.1/jquery.min.js"></script>
        <link rel="stylesheet" href="../bootstrap-3.3.7/dist/css/bootstrap.min.css"></link>
        <script sec="../bootstrap-3.3.7/dist/js/bootstrap.min.js"></script>
    </head>
<body> 
<div class="container">
        <table class="table">
            <caption>${sysUser}</caption>
            <thead>
                <tr>
                    <th>First Name</th>
                    <th>Last Name</th>
                    <th>User Name</th>
                </tr>
            </thead>
            <tbody>
                <tr>
                    <td>aehyok</td>
                    <td>leo</td>
                    <td>@aehyok</td>
                </tr>
                <tr>
                    <td>lynn</td>
                    <td>thl</td>
                    <td>@lynn</td>
                </tr>
                <#list userList as user>
                <tr>
                    <td>${user.id}</td>
                    <td>${user.name}</td>
                    <td>${user.phone}</td>
                </tr>
                   </#list>
                
            </tbody>
        </table>
    </div>
</body>
</html>

freemarker的表达式可参考本博客【FreeMarker】随笔分类：http://www.cnblogs.com/xxt19970908/p/5594258.html

四、启动测试

1、检查启动信息：freemarker配置是否生效

2、访问：http://localhost:8080/sysUser

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原文地址：https://www.cnblogs.com/xxt19970908/p/6736455.html