接口<interface>
服务<service>
sql语句mapper<mapper.xml>
sql调用接口<mapper.interface>
1.配置加载库: pom.xml
<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.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.apache.shiro</groupId>
<artifactId>shiro-core</artifactId>
<version>1.4.1</version>
</dependency>
<dependency>
<groupId>org.apache.shiro</groupId>
<artifactId>shiro-spring</artifactId>
<version>1.4.0</version>
</dependency>
<!--数据库相关-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.1.6</version>
</dependency>
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>1.2.0</version>
</dependency>
<!--工具库-->
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.4</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>4.2.3.RELEASE</version>
</dependency>
<!--jsp相关配置-->
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
</dependency>
<dependency>
<groupId>org.apache.ibatis</groupId>
<artifactId>ibatis-core</artifactId>
<version>3.0</version>
</dependency>
2.创建模型
import java.util.HashSet;
import java.util.Set;
public class User {
private Integer uid;
private String username;
private String password;
private Set<Role> roles=new HashSet<>();
private Set<Permission> permissions=new HashSet<>();
public Integer getUid() {
return uid;
}
public void setUid(Integer uid) {
this.uid = uid;
}
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 Set<Role> getRoles() {
return roles;
}
public void setRoles(Set<Role> roles) {
this.roles = roles;
}
public Set<Permission> getPermissions() {
return permissions;
}
public void setPermissions(Set<Permission> permissions) {
this.permissions = permissions;
}
}
import java.util.HashSet;
import java.util.Set;
public class Role {
private Integer rid;
private String rname;
private Set<Permission> permissions=new HashSet<>();
public Integer getRid() {
return rid;
}
public void setRid(Integer rid) {
this.rid = rid;
}
public String getRname() {
return rname;
}
public void setRname(String rname) {
this.rname = rname;
}
public Set<Permission> getPermissions() {
return permissions;
}
public void setPermissions(Set<Permission> permissions) {
this.permissions = permissions;
}
}
public class Permission {
private Integer pid;
private String name;
private String url;
public Integer getPid() {
return pid;
}
public void setPid(Integer pid) {
this.pid = pid;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getUrl() {
return url;
}
public void setUrl(String url) {
this.url = url;
}
}
3.创建数据库查询
public interface UserMapper {
User findByUsername(@Param("username") String username);
}
public interface UserService {
User findByUsername(String username);
}
@Service
public class UserServiceImpl implements UserService {
@Resource
private UserMapper userMapper;
@Override
public User findByUsername(String username) {
return userMapper.findByUsername(username);
}
}
<?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" >
<mapper namespace="cn.safi16.springbootshiro.mapper.UserMapper">
<!-- select 对应的方法结果 -->
<resultMap id="userMap" type="cn.safi16.springbootshiro.model.User">
<id property="id" column="id"/>
<result property="username" column="username"/>
<result property="password" column="password"/>
<!--复合结果-->
<collection property="roles" oftype="cn.safi16.springbootshiro.model.Role">
<id property="rid" column="rid"/>
<result property="rname" column="rname"/>
<!--复合结果-->
<collection property="permissions" oftype="cn.safi16.springbootshiro.model.Permission">
<id property="pid" column="pid"/>
<result property="name" column="name"/>
<result property="url" column="url"/>
</collection>
</collection>
</resultMap>
<!--方法执行语句-->
<select id="findByUsername" property="string" resultMap="userMap">
SELECT u.*, r.*, p.*
FROM user u
INNER JOIN user_role ur on ur.uid = u.uid
INNER JOIN role r on r.rid = ur.rid
INNER JOIN permission_role pr on pr.rid = r.rid
INNER JOIN permission p on pr.pid = p.pid
WHERE u.username = #{username}
</select>
</mapper>
6.测试查询用户信息
@RestController
public class HomeController {
@Autowired
private UserService userService;
// 登录页面
@RequestMapping("/test")
public String login(){
User user=userService.findByUsername("admin");
if (user==null){
return "用户找不到";
}else{
return "用户名是: "+user.getUsername();
}
}
}
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