现在我已经从ios转行为java了呦吼吼吼~~~

1.先来一张界面，项目的字段太多了，为了研究知识点我做了个潘长江版的

    
      
        
       
                    
         
                          
姓名：
                          
                     
                     
                          
身份证号：
                          
                     
                     
                          
教育经历：
                          
                    
           
 
             
           
                                        
                     
                
       
        
           
      

2.Person、Educa两个model

Person中@OneToMany括号中的cascade是级联，用来管理如何存储Person与Educa表

package com.example.model;import java.util.ArrayList;import java.util.List;import javax.persistence.CascadeType;import javax.persistence.Column;import javax.persistence.Entity;import javax.persistence.GeneratedValue;import javax.persistence.GenerationType;import javax.persistence.Id;import javax.persistence.JoinColumn;import javax.persistence.OneToMany;@Entitypublic class Person {    @Id    @GeneratedValue(strategy = GenerationType.AUTO)    @Column(name = "id")    protected Long id;    @Column    private String idCard;// 身份证号    @Column    private String name;// 姓名    @OneToMany(cascade = { CascadeType.ALL }, orphanRemoval = true)    @JoinColumn(name = "person_id")    private List
      
        educations = new ArrayList
       
        ();// 教育经历    public Long getId() {        return id;    }    public void setId(Long id) {        this.id = id;    }    public String getIdCard() {        return idCard;    }    public void setIdCard(String idCard) {        this.idCard = idCard;    }    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }    public List
        
          getEducations() {        return educations;    }    public void setEducations(List
         
           educations) {        this.educations = educations;    }}
         
        
       
      

package com.example.model;import javax.persistence.Column;import javax.persistence.Entity;import javax.persistence.GeneratedValue;import javax.persistence.GenerationType;import javax.persistence.Id;import javax.persistence.JoinColumn;import javax.persistence.ManyToOne;@Entitypublic class Educa {    @Id    @GeneratedValue(strategy = GenerationType.AUTO)    @Column(name = "id")    protected Long id;    @ManyToOne    @JoinColumn(name = "person_id")    private Person person;// 所属人物    @Column    private String school;// 学校    public Long getId() {        return id;    }    public void setId(Long id) {        this.id = id;    }    public Person getPerson() {        return person;    }    public void setPerson(Person person) {        this.person = person;    }    public String getSchool() {        return school;    }    public void setSchool(String school) {        this.school = school;    }}

3.利用jpa的save方法

声明PersonRepository的时候一定要加注释，注意命名规范，要同名小写

package com.example.repository;import org.springframework.data.jpa.repository.JpaRepository;import com.example.model.Person;public interface PersonRepository extends JpaRepository
      
        {}
      

package com.example.service;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Service;import com.example.model.Person;import com.example.repository.PersonRepository;@Servicepublic class PersonService {    @Autowired    private PersonRepository personRepository;    public void save(Person person) {        personRepository.save(person);    }}

4.controller

同样声明的时候要注意注释和命名规范

package com.example;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.ModelAttribute;import org.springframework.web.bind.annotation.RequestMapping;import com.example.model.Person;import com.example.service.PersonService;@Controllerpublic class PersonController {    @Autowired    private PersonService personService;    @RequestMapping    public String form() {        return "form";    }    @RequestMapping("/success")    public String submit(@ModelAttribute Person person) {        personService.save(person);        return "success";    }}

5.完成！

点击提交：

（这是一张截图啦~）

ps:如果修改页面中的角标再提交会在数据库插入若干条空的信息。所以表单需要在controller里处理一下。另外页面还可以用thymeleaf实现，看心情补充~~~~