SpringBoot整合SSM项目+jsp

作者: 煗NUAN | 来源:发表于2020-04-08 21:58 被阅读0次

SpringBoot整合SSM项目+jsp
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SpringBoot整合SSM项目+jsp

1.新建SpringBoot项目

01.jpg

02.jpg

2.pom.xml文件中添加依赖

<!--SpringBoot整合mybatis-->
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>2.1.2</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.1.15</version>
        </dependency>


        <!--SpringBoot整合jsp-->
        <!--添加servlet依赖模块-->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <scope>provided</scope>
        </dependency>
        <!-- 添加jstl标签库依赖模块 -->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jstl</artifactId>
        </dependency>
        <!--添加tomcat依赖模块.-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-tomcat</artifactId>
            <scope>provided</scope>
        </dependency>
        <!-- 使⽤jsp引擎，springboot内置tomcat没有此依赖 -->
        <dependency>
            <groupId>org.apache.tomcat.embed</groupId>
            <artifactId>tomcat-embed-jasper</artifactId>
            <scope>provided</scope>
        </dependency>

添加依赖后的pom.xml文件

<?xml version="1.0" encoding="UTF-8"?>
<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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <!--
        自动生成当前项⽬的⽗项⽬为spring-boot-starter-parent
        标记当前项⽬为⼀个springboot的项⽬
        版本为2.2.6
    -->
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.2.6.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.ym</groupId>
    <artifactId>spring_boot</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>war</packaging>
    <name>spring_boot</name>
    <description>Demo project for Spring Boot</description>

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

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

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>


        <!--SpringBoot整合mybatis-->
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>2.1.2</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.1.15</version>
        </dependency>


        <!--SpringBoot整合jsp-->
        <!--添加servlet依赖模块-->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <scope>provided</scope>
        </dependency>
        <!-- 添加jstl标签库依赖模块 -->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jstl</artifactId>
        </dependency>
        <!--添加tomcat依赖模块.-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-tomcat</artifactId>
            <scope>provided</scope>
        </dependency>
        <!-- 使⽤jsp引擎，springboot内置tomcat没有此依赖 -->
        <dependency>
            <groupId>org.apache.tomcat.embed</groupId>
            <artifactId>tomcat-embed-jasper</artifactId>
            <scope>provided</scope>
        </dependency>

    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

3.在resource包下添加application.yml文件

server:
  port: 8080
  # 指定端口
spring:
  # 配置数据源
  datasource:
    type: com.alibaba.druid.pool.DruidDataSource
    url: jdbc:mysql://localhost:3307/datatest?useSSL=false&serverTimezone=UTC&characterEncoding=utf-8
    driver-class-name: com.mysql.cj.jdbc.Driver
    username: root
    password: root
  # 给返回值加上前缀和后缀
  mvc:
    view:
      prefix: /WEB-INF/page/
      suffix: .jsp
# 配置mybatis
mybatis:
  type-aliases-package: com.ym.pojo
  mapper-locations: classpath*:mapper/*Mapper.xml

4.pojo层User

package com.ym.pojo;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;


@Data
@AllArgsConstructor
@NoArgsConstructor
public class User {
    private int uid;
    private String name;
    private String sex;
    private int age;
    private String address;
}

5.dao层接口

接口上需要@Mapper注解

package com.ym.dao;

import com.ym.pojo.User;
import org.apache.ibatis.annotations.Mapper;

import java.util.List;


@Mapper //接口上有注解
public interface IUserDao {
    List<User> getAllUsers();
}

6.resource包下新建mapper包,并新建与接口对应的xml文件

UsersMapper.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<!-- 整个映射文件为mapper节点，里面包含namespace属性 -->
<mapper namespace="com.ym.dao.IUserDao">

    <sql id="all">
        select * from users
    </sql>

    <select id="getAllUsers" resultType="user">
        <include refid="all" />
    </select>
</mapper>

7.service层接口IUserService.java

package com.ym.service;

import com.ym.pojo.User;

import java.util.List;

public interface IUserService {
    List<User> getAllUsers();
}

8.service层接口的实现类UserService.java

package com.ym.service.impl;

import com.ym.dao.IUserDao;
import com.ym.pojo.User;
import com.ym.service.IUserService;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;
import java.util.List;

@Service
public class UserService implements IUserService {

    @Resource
    private IUserDao userDao;

    @Override
    public List<User> getAllUsers() {
        return userDao.getAllUsers();
    }
}

9.controller层的项目的启动主页indexController.java

项目启动后,页面直接显示hello , spring boot

package com.ym.controller;

import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;


@RestController
public class IndexController {

    @GetMapping("/")
    public String index(){
        return "hello , spring boot";
    }
}

10.controller层的UserController.java

package com.ym.controller;

import com.ym.pojo.User;
import com.ym.service.IUserService;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;

import javax.annotation.Resource;
import java.util.List;


@Controller
public class UserController {

    @Resource
    private IUserService userService;

    @GetMapping("/getAllUser")
    @ResponseBody
    public List<User> getAllUser(){
        List<User> users = userService.getAllUsers();
        return users;
    }


    @GetMapping("/allUser")
    public String queryAllUser(Model model){
        List<User> users = userService.getAllUsers();
        model.addAttribute("users",users);
        return "user";
    }
}

11.新建jsp页面

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<html>
<head>
    <title>用户</title>
</head>
<body>
<h1>用户列表页</h1>
<table width="80%" align="center" border="1">
    <tr>
        <th>编号</th>
        <th>名称</th>
        <th>性别</th>
        <th>年龄</th>
        <th>地址</th>
    </tr>
    <c:forEach items="${users}" var="u">
        <tr>
            <td>${u.uid}</td>
            <td>${u.name}</td>
            <td>${u.sex}</td>
            <td>${u.age}</td>
            <td>${u.address}</td>
        </tr>
    </c:forEach>
</table>

</body>
</html>

12.目录结构

目录位置.jpg

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