SpringBoot中使用Thymeleaf

这里需要使用@Controller，不能使用@RestController，不然会以Json格式响应到页面，不会进行视图解析。
1

解决:template might not exist or might not be accessible by any of the configured Template Resolvers报错

IDEA中thymeleaf 表达式报红波浪线
在这里插入图片描述

在<!DOCTYPE html>下加上
<!--suppress ALL-->
把设置里面的 Editor->Inspections->Thymeleaf->Expression variables validation后面的勾去掉
1
2
3

在这里插入图片描述
红线消失！

Model, ModelMap, and ModelAndView in Spring MVC

UserMapper.java


package com.leyou.mapper;

import com.leyou.pojo.TbUser;
import org.apache.ibatis.annotations.Mapper;

@Mapper
public interface UserMapper extends tk.mybatis.mapper.common.Mapper<TbUser>{

}


1
2
3
4
5
6
7
8
9
10
11
12

UserService.java


package com.leyou.service;

import com.leyou.mapper.UserMapper;
import com.leyou.pojo.TbUser;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;

@Service
public class UserService {

    @Autowired
    private UserMapper userMapper;

    public List<TbUser> queryByObj(TbUser user){
        return this.userMapper.select(user);
    }

    public TbUser queryById(Long id){
        return this.userMapper.selectByPrimaryKey(id);
    }

    public List<TbUser> queryAll(){
        return this.userMapper.selectAll();
    }

    @Transactional
    public void deleteById(Long id){
        this.userMapper.deleteByPrimaryKey(id);
    }
}

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35

TbUser.java

package com.leyou.pojo;

import javax.persistence.Id;
import java.util.Date;

public class TbUser {
    @Id
    private Long id;

    // 用户名
    private String userName;

    // 密码
    private String password;

    // 姓名
    private String name;

    // 年龄
    private Integer age;

    // 性别，1男性，2女性
    private Integer sex;

    // 出生日期
    private Date birthday;

    // 创建时间
    private Date created;

    // 更新时间
    private Date updated;

    public Long getId() {
        return id;
    }

    public void setId(Long 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 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 Integer getSex() {
        return sex;
    }

    public void setSex(Integer sex) {
        this.sex = sex;
    }

    public Date getBirthday() {
        return birthday;
    }

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

    public Date getCreated() {
        return created;
    }

    public void setCreated(Date created) {
        this.created = created;
    }

    public Date getUpdated() {
        return updated;
    }

    public void setUpdated(Date updated) {
        this.updated = updated;
    }

    @Override
    public String toString() {
        return "User [id=" + id + ", userName=" + userName + ", password=" + password + ", name=" + name
                + ", age=" + age + ", sex=" + sex + ", birthday=" + birthday + ", created=" + created
                + ", updated=" + updated + "]";
    }
}

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113

ThymeleafController.java

package com.leyou.controller;

import com.leyou.pojo.TbUser;
import com.leyou.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RestController;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

@Controller
public class ThymeleafController {

    @Autowired
    private UserService userService;

    @GetMapping("/all")
    public String all(ModelMap model) {
        // 查询用户
        List<TbUser> tbUsers = this.userService.queryAll();
        System.out.println("tbUsers = " + tbUsers);
        // 放入模型
        model.addAttribute("tbUsers", tbUsers);
        // 返回模板名称（就是classpath:/templates/目录下的html文件名）
        return "users.html";
    }

    @GetMapping("/showViewPage")
    public String passParametersWithModel(Model model) {
        Map<String, String> map = new HashMap<>();
        map.put("spring", "mvc");
        model.addAttribute("message1", "Baeldung");
        model.addAttribute("message2", "zhangsan");
        model.mergeAttributes(map);
        return "test.html";
    }
}

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44

users.html

DOCTYPE html>

<html xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>首页title>
    <style type="text/css">
        table {border-collapse: collapse; font-size: 14px; width: 80%; margin: auto}
        table, th, td {border: 1px solid darkslategray;padding: 10px}
    style>
head>
<body>
<div style="text-align: center">
    <span style="color: darkslategray; font-size: 30px">欢迎光临！span>
    <hr/>
    <table class="list">

        <tr>
            <th>idth>
            <th>姓名th>
            <th>用户名th>
            <th>年龄th>
            <th>性别th>
            <th>生日th>
           
        tr>
        <tr th:each="user : ${tbUsers}">
            <td th:text="${user.id}">1td>
            <td th:text="${user.name}">张三td>
            <td th:text="${user.userName}">zhangsantd>
            <td th:text="${user.age}">20td>
            <td th:text="${user.sex} == 1 ? '男': '女'">男td>
            <td th:text="${#dates.format(user.birthday, 'yyyy-MM-dd')}">1980-02-30td>
           
        tr>

    table>
div>
body>
html>
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40

test.html

DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>Titletitle>
head>
<body>
<table border="1">
    <tr>
        <th>表头1th>
        <th>表头2th>
    tr>
    <tr>
        <td th:text="${message1}" >默认值1td>
        <td th:text="${message2}" >默认值2td>
    tr>
table>
body>
html>
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19

pom.xml


<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0modelVersion>

    <groupId>org.examplegroupId>
    <artifactId>springboot_demoartifactId>
    <version>1.0-SNAPSHOTversion>

    <parent>
        <groupId>org.springframework.bootgroupId>
        <artifactId>spring-boot-starter-parentartifactId>
      
        <version>2.1.7.RELEASEversion>
    parent>

    <properties>
        <java.version>1.8java.version>
    properties>

    <dependencies>
        
      <dependency>
            <groupId>org.springframework.securitygroupId>
            <artifactId>spring-security-webartifactId>
        dependency>
        <dependency>
            <groupId>org.springframework.securitygroupId>
            <artifactId>spring-security-configartifactId>
        dependency>
        <dependency>
            <groupId>commons-codecgroupId>
            <artifactId>commons-codecartifactId>
        dependency>
        <dependency>
            <groupId>org.apache.commonsgroupId>
            <artifactId>commons-lang3artifactId>
            <version>3.9version>
        dependency>

        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-webartifactId>
        dependency>
        <dependency>
            <groupId>org.projectlombokgroupId>
            <artifactId>lombokartifactId>
            <version>1.18.8version>
            <scope>providedscope>
        dependency>

        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-loggingartifactId>
        dependency>

        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-jdbcartifactId>
        dependency>

        <dependency>
            <groupId>mysqlgroupId>
            <artifactId>mysql-connector-javaartifactId>
        dependency>
        
        <dependency>
            <groupId>org.mybatis.spring.bootgroupId>
            <artifactId>mybatis-spring-boot-starterartifactId>
            <version>1.3.2version>
        dependency>
        
      <dependency>
            <groupId>com.alibabagroupId>
            <artifactId>druid-spring-boot-starterartifactId>
            <version>1.1.10version>
        dependency>
        
       <dependency>
            <groupId>tk.mybatisgroupId>
            <artifactId>mapper-spring-boot-starterartifactId>
            <version>2.0.2version>
        dependency>

        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-thymeleafartifactId>
        dependency>

    dependencies>
project>
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92

application.properties

# ?置com.leyou包的日志???debug
logging.level.com.leyou=debug

# mybatis ?名?描
mybatis.type-aliases-package=com.leyou.pojo

# ?接四大参数
spring.datasource.url=jdbc:mysql://localhost:3306/user_manager?serverTimezone=UTC
spring.datasource.username=root
spring.datasource.password=root
# 可省略，SpringBoot自?推断
spring.datasource.driverClassName=com.mysql.cj.jdbc.Driver

spring.datasource.hikari.idle-timeout=60000
spring.datasource.hikari.maximum-pool-size=30
spring.datasource.hikari.minimum-idle=10

#初始化?接数
spring.datasource.druid.initial-size=1
#最小空??接
spring.datasource.druid.min-idle=1
#最大活??接
spring.datasource.druid.max-active=20
#?取?接???是否可用
spring.datasource.druid.test-on-borrow=true
#?控?面??
spring.datasource.druid.stat-view-servlet.allow=true

# mapper.xml文件位置,如果没有映射文件，?注?掉
#mybatis.mapper-locations=classpath:mybatis/mapper/*.xml

# ???段??thymeleaf的模板?存
spring.thymeleaf.cache=false
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33

在这里插入图片描述

相关阅读:
FusionSphere虚拟化解决方案介绍
 LeetCode220829_91、除自身以外数组的乘积
 基于PG-Oracle和MySQL的三库通用sql代码开发
 nacos -分布式事务-Seata** linux安装jdk ,mysql5.7启动nacos配置ideal 调用接口配合 (保姆级细节教程)
java:SpringBoot入门
 爱上开源之golang入门至实战第三章goroutine分析
 AntDB数据并行加载工具的实现
 千变万化的Promise
springnative让java应用脱离jvm
【实战原创】Centos7下Samba服务器配置（实战）
原文地址：https://blog.csdn.net/djydjy3333/article/details/126498388