Wise school] [springcloud + springboot + ssm (jsp shown)

when you run,please do as this:

pom.xml:

<?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>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.2.2.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.huizhi</groupId>
    <artifactId>orderservice</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>orderservice</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>1.8</java.version>
        <spring-cloud.version>Hoxton.SR1</spring-cloud.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jdbc</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>2.1.1</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>

<!--        连接数据库的代码-->

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <scope>runtime</scope>
        </dependency>

        <!--       添加jsp的maven依赖-->
        <dependency>
            <groupId>org.apache.tomcat.embed</groupId>
            <artifactId>tomcat-embed-jasper</artifactId>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jstl</artifactId>
        </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>
    </dependencies>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>${spring-cloud.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

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

</project>

application.properties:

#数据库指向，school是我的数据库名，改成自己的
spring.datasource.url=jdbc:mysql://localhost:3306/mymis?useUnicode=true&characterEncoding=UTF-8&serverTimezone=Asia/Shanghai
#数据库用户名
spring.datasource.username=root
#数据库密码
spring.datasource.password=root
#出现mysql jdbc标红报错问题------>去pom.xml中删除mysql-connector-java下面的runtime那一行
spring.datasource.driverClassName=com.mysql.jdbc.Driver
spring.jpa.database = mysql

#Mybatis扫描
mybatis.mapper-locations=classpath*:mapper/*.xml
#起别名。可省略写mybatis的xml中的resultType的全路径

mybatis.type-aliases-package=com.huizhi.demo.po
spring.rsocket.server.port=8080
spring.mvc.view.prefix=/WEB-INF/jsp/
spring.mvc.view.suffix=.jsp

UserController:

package com.huizhi.orderservice.controller;

import com.huizhi.orderservice.po.User;
import com.huizhi.orderservice.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.view.InternalResourceViewResolver;

import java.util.List;

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

//    @Bean
//    public InternalResourceViewResolver viewResolver() {
//        InternalResourceViewResolver viewResolver = new InternalResourceViewResolver();
//        viewResolver.setPrefix("/WEB-INF/jsp/");
//        viewResolver.setSuffix(".jsp");
//        return viewResolver;
//    }

    //注入用户Service
    @Autowired
    private UserService userService;
    //查询所有用户

//    public List<User> getAllUsers(){
//        List<User> list=this.userService.getAllUsers();
//        return list;
//    }
    @RequestMapping("/userList")
    public String getAllUsers(Model model){
        List<User> list=this.userService.getAllUsers();
        model.addAttribute("userList",list);
        //return "user";//静态页面访问
        return "a";//jsp页面
    }
    //删除用户
    @RequestMapping("/delete/{id}")
    public String delete(@PathVariable Integer id,Model model){
        this.userService.deleteUser(id);

        List<User> list=this.userService.getAllUsers();
        model.addAttribute("userList",list);
        //return "user";//静态页面访问
        return "a";//jsp页面

    }
}

UserMapper:

package com.huizhi.orderservice.dao;

import com.huizhi.orderservice.po.User;
import org.apache.ibatis.annotations.Delete;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Select;
import org.springframework.web.bind.annotation.ResponseBody;

import java.util.List;

@Mapper
@ResponseBody
public interface UserMapper {
    //查询所有用户
    @Select("select*from tb_user")
    List<User> getAllUsers();
    //删除所有用户
    @Delete("delete from tb_user where id=#{id}")
    void delte(Integer id);
}

User:

package com.huizhi.orderservice.po;

import java.io.Serializable;

public class User implements Serializable {

    private Integer id;
    private String userName;
    private String address;

    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 getAddress() {
        return address;
    }

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

UserService:

package com.huizhi.orderservice.service;
import com.huizhi.orderservice.po.User;
import java.util.List;
public interface UserService {
    //查询所有
    List<User> getAllUsers();
    //删除数据
    void deleteUser(Integer id);
}

UserServiceImpl:

package com.huizhi.orderservice.service.impl;

import com.huizhi.orderservice.dao.UserMapper;
import com.huizhi.orderservice.po.User;
import com.huizhi.orderservice.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cache.annotation.CacheEvict;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;

@Service
@Transactional
public class UserServiceImpl implements UserService {
    //注入用户Mapper
    @Autowired(required=false)
    private UserMapper userMapper;
    //查询所有用户
    @Cacheable(value="UserCache",key="'user.getAllUsers'")
    public List<User> getAllUsers(){
        return this.userMapper.getAllUsers();
    }
    //删除用户
    @CacheEvict(value = "UserCache",key = "'user.getAllUsers'")
    public void deleteUser(Integer id){
        this.userMapper.delte(id);
        System.out.println("删除了id为"+id+"的用户");
    }
}