SpringBoot 第二篇_configuration.gettemplate-优快云博客

本文链接：https://blog.youkuaiyun.com/m0_52994499/article/details/121376537

一、 SpringBoot整合FreeMarker

1.1 导入依赖

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-freemarker</artifactId>
</dependency>

1.2 在application.properties文件添加配置

########## 配置freemarker ##########
#是否开启缓存
spring.freemarker.cache=false
#路径
spring.freemarker.template-loader-path=classpath:/templates
#文件后缀
spring.freemarker.suffix=.ftl

spring.freemarker.charset=UTF-8
spring.freemarker.content-type=text/html

1.3 创建实体类

package com.qf.pojo;

public class Student {

    private Integer id;
    private String name;
    private Integer age;

    private String address;

    public Student(Integer id, String name, Integer age, String address) {

        this.id = id;
        this.name = name;
        this.age = age;
        this.address = address;
    }

    public Student() {
    }

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getName() {

        return name;
    }

    public void setName(String name) {
        this.name = name;
    }


    public Integer getAge() {
        return age;
    }

    public void setAge(Integer age) {
        this.age = age;
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }
}

1.4在templates目录下创建student.ftl文件（然后把该ftl文件拷贝到D:/ftl目录下，一会用）

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    <table border="1" width=600>
        <tr>
            <th>index</th>
            <th>id</th>
            <th>name</th>
            <th>age</th>
            <th>address</th>
        </tr>
        <#list students as student>
            <#if student_index % 2 == 0>
            <tr bgcolor="red">
                <#else>
            <tr bgcolor="yellow">
            </#if>
            <td>${student_index}</td>
            <td>${student.id}</td>
            <td>${student.name}</td>
            <td>${student.age}</td>
            <td>${student.address}</td>
            </tr>
        </#list>
    </table>
</body>
</html>

1.5创建controller

package com.qf.controller;

import com.qf.pojo.Student;
import freemarker.template.Configuration;
import freemarker.template.Template;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import javax.servlet.http.HttpServletRequest;
import java.io.File;
import java.io.FileWriter;
import java.util.ArrayList;
import java.util.HashMap;

@Controller
@RequestMapping("/freemarker")
public class FreeMarkerController {

    @RequestMapping("/student")
    public String hello(Model model) throws Exception {

        //创建List集合获取多个元素
        ArrayList<Student> students = new ArrayList<>();
        students.add(new Student(1, "jack", 18, "郑州二七"));
        students.add(new Student(2, "rose", 19, "郑州中原"));
        students.add(new Student(3, "tom", 20, "郑州金水"));

        model.addAttribute("students",students);

        return "/student";
    }

    //生成静态页面的方法
    @RequestMapping("createHtml")
    @ResponseBody
    public String createHtml()throws Exception{
        //获取配置对象
        Configuration configuration = new Configuration(Configuration.DEFAULT_INCOMPATIBLE_IMPROVEMENTS);
        //设置字符集
        configuration.setDefaultEncoding("utf-8");

        //设置加载的模版目录
        configuration.setDirectoryForTemplateLoading(new File("D:/ftl"));
        //创建List集合获取多个元素
        ArrayList<Student> students = new ArrayList<>();
        students.add(new Student(1,"张三",18,"北京"));
        students.add(new Student(2,"李四",19,"上海"));
        students.add(new Student(3,"王五",20,"广州"));

        //使用map集合加载数据
        HashMap<String,ArrayList> map = new HashMap<>();
        map.put("students",students);

        //创建输出流对象
        FileWriter fileWriter = new FileWriter(new
                File("D:/ftl_html/student.html"));

        //获取加载的模板
        Template template = configuration.getTemplate("student.ftl");
        //生成html文件
        template.process(map,fileWriter);
        //关流
        fileWriter.close();

        return "success";
    }

}

启动工程，进行测试

二、SpringBoot整合Thymeleaf

2.1导入依赖

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>

2.2在application.properties文件添加配置

########## 配置thymeleaf ##########
spring.thymeleaf.cache=false
spring.thymeleaf.encoding=utf-8

spring.thymeleaf.prefix=classpath:/templates

spring.thymeleaf.suffix=.html

spring.thymeleaf.mode=HTML5
spring.thymeleaf.servlet.content-type=text/html

2.3创建实体类

package com.qf.pojo;

import java.util.Date;

public class User {

    private Integer id;
    private String username;
    private String password;

    private Date birthday;

    public User(Integer id, String username, String password, Date birthday) {
        this.id = id;
        this.username = username;
        this.password = password;
        this.birthday = birthday;
    }
    
    public User() {
    }

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    public Date getBirthday() {
        return birthday;
    }

    public void setBirthday(Date birthday) {
        this.birthday = birthday;
    }

    @Override
    public String toString() {
        return "User{" +
                "id=" + id +
                ", username='" + username + '\'' +
                ", password='" + password + '\'' +
                ", birthday=" + birthday +
                '}';
    }
}

2.4创建Controller

package com.qf.controller;

import com.qf.pojo.User;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;

import java.util.ArrayList;
import java.util.Date;

@Controller
@RequestMapping("user")
public class UserController {


    @RequestMapping("findAll")
    public String findAll(Model model) {

        ArrayList<User> users = new ArrayList<>();

        users.add(new User(1001, "张三", "123", new Date()));
        users.add(new User(1002, "李四", "456", new Date()));
        users.add(new User(1003, "王五", "789", new Date()));

        model.addAttribute("users", users);

        return "/list";
    }

    @RequestMapping("findById")
    public String findById(Model model, String uid) {
        System.out.println(uid);

        if (uid.equals("1001")) {
            User user = new User(1001, "张三", "123", new Date());
            model.addAttribute("user", user);
        }

        return "/queryOne";

    }

}

2.5在templates目录下创建list.html以及queryOne.html

list.html

<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.w3.org/1999/xhtml">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>


<div th:if="${users!=null}">

    <table border="1" width="600">
        <tr th:each="user,state : ${users}">
            <td th:text="${state.count}"></td>
            <td th:text="${user.id}"></td>
            <td th:text="${user.username}"></td>

            <td th:text="${#dates.format(user.birthday, 'yyyy-MM-dd HH:mm:ss')}"></td>
        </tr>
    </table>

    <hr>
    <table border="1" width="600">
        <!-- 第二个变量，可以获取遍历的元素的状态-->
        <tr th:each="user,state : ${users}">
            <td th:text="${state.index}"></td>
            <td th:text="${user.id}"></td>
            <td th:text="${user.username}"></td>
            <td th:text="${#dates.format(user.birthday, 'yyyy-MM-dd HH:mm:ss')}"></td>
        </tr>
    </table>
    <hr>

    <table border="1" width="600">
        <!--如果不设置表示状态的变量，默认遍历的元素的变量名+Stat
表示状态的变量-->
        <tr th:each="user : ${users}">
            <td th:text="${userStat.count}"></td>
            <td th:text="${user.id}"></td>
            <td th:text="${user.username}"></td>
            <td th:text="${#dates.format(user.birthday, 'yyyy-MM-
dd HH:mm:ss')}"></td>

        </tr>
    </table>

</div>

<hr color="red">

<table border="1" width="600">
    <tr>
        <th>序号</th>
        <th>姓名</th>
        <th>生日</th>
        <th>详情</th>
    </tr>
    <tr th:each="user : ${users}">
        <td th:text="${userStat.count}"></td>
        <td th:text="${user.username}"></td>
        <td th:text="${#dates.format(user.birthday, 'yyyy-MM-dd HH:mm:ss')}"></td>