我正在用spring boots构建一个项目,通过控制检查互联网的状态,并且正在进行数据库连接。
我正在尝试执行“MyBatis”,但出现错误。
监控数据应用程序.java
package com.smartcore.mn.springboot;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
@MapperScan(basePackages = "com.smartcore.mn.springboot")
public class MinitoringdataApplication {
public static void main(String[] args) {
SpringApplication.run(MinitoringdataApplication.class, args);
}
}
ServletInitializer.java
package com.smartcore.mn.springboot;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;
public class ServletInitializer extends SpringBootServletInitializer {
@Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
return application.sources(MinitoringdataApplication.class);
}
}
ApiController.java
package com.smartcore.mn.springboot.controller;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
import com.smartcore.mn.springboot.model.Member;
import com.smartcore.mn.springboot.service.MemberService;
@RestController
public class ApiController {
@Autowired
MemberService memberService;
@GetMapping(path = "/helloWorld")
public String helloWorld() {
return LocalDateTime.now().format(DateTimeFormatter.ISO_LOCAL_DATE_TIME);
}
@GetMapping(path = "/db")
public List<Member> selectAllMember() {
List<Member> members = memberService.getAllMember();
return members;
}
}
MemberMapper.interface
package com.smartcore.mn.springboot.mapper;
import java.util.List;
import org.apache.ibatis.annotations.Mapper;
import com.smartcore.mn.springboot.model.Member;
@Mapper
public interface MemberMapper {
Member selectMemberById(Long id);
List<Member> selectAllMember();
void insertMember(Member member);
}
Member.java
package com.smartcore.mn.springboot.model;
import java.util.Date;
import org.apache.ibatis.type.Alias;
import com.smartcore.mn.springboot.Exception.IdPasswordNotMatchingException;
import lombok.Data;
@Data
@Alias("member")
public class Member {
private Long id;
private String email;
private String password;
private String name;
private Date registerDate;
public Member(String email, String password, String name, Date registerDate) {
this.email = email;
this.password = password;
this.name = name;
this.registerDate = registerDate;
}
public void setId(Long id) {
this.id = id;
}
public Long getId() {
return id;
}
public String getEmail() {
return email;
}
public String getPassword() {
return password;
}
public String getName() {
return name;
}
public Date getRegisterDate() {
return registerDate;
}
public void changePassword(String oldPassword, String newPassword) {
if (!password.equals(oldPassword))
throw new IdPasswordNotMatchingException();
this.password = newPassword;
}
}
MemberService.java
package com.smartcore.mn.springboot.service;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import com.smartcore.mn.springboot.mapper.MemberMapper;
import com.smartcore.mn.springboot.model.Member;
@Service
@Transactional
public class MemberService {
@Autowired
MemberMapper memberMapper;
public Member getMemberById(Long id) {
return memberMapper.selectMemberById(id);
}
public List<Member> getAllMember() {
return memberMapper.selectAllMember();
}
public void addMember(Member member) {
memberMapper.insertMember(member);
}
}
application.properties
spring.datasource.url=jdbc:mysql://localhost/mydb?serverTimezone=UTC&autoReconnection=true
spring.datasource.username=mydb
spring.datasource.password=mydb
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
mybatis.type-aliases-package=com.smartcore.mn.springboot.model
logging.level.com.smartcore.mn.springboot.mapper=TRACE
MemberMapper.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">
<mapper namespace="com.smartcore.mn.springboot.mapper.MemberMapper">
<select id="selectMemberById" resultType="member">
SELECT *
FROM MEMBER
WHERE ID = #{id}
</select>
<select id="selectAllMember" resultType="member">
SELECT *
FROM MEMBER
</select>
<insert id="insertMember">
INSERT INTO MEMBER (EMAIL, PASSWORD, NAME, REGDATE)
VALUES (#{email}, #{password}, #{name}, #{registerDate})
</insert>
</mapper>
<强> http://localhost:8080/helloworld 工作正常。
但是 http://localhost:8080/db 看到错误
我需要你的解决方案。预先感谢您。
我的 table
最佳答案
正如我们在评论中的讨论中提到的,MyBatis 正在尝试将结果集中的 NAME
列映射到 Member
中的 registerDate
参数> 构造函数。
由于您没有为每个字段指定paramName
,构造函数中arg元素的顺序很容易出错。
尝试使用正确的有序参数将结果集映射到构造函数:
成员(member)(字符串电子邮件、字符串密码、字符串名称、日期注册日期)
应匹配 SELECT EMAIL, PASSWORD, NAME, REGDATE FROM MEMBER
或
成员(长 ID、字符串电子邮件、字符串密码、字符串名称、日期注册日期)
应匹配 SELECT * FROM MEMBER
关于java.sql.时间戳值; Spring-boot项目中的嵌套异常是java.sql.SQLDataException,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/56861985/