Jpa

zhuzhengping911 · zhuzhengping911 · commit 17d8f56cae10 · 2017-03-13T23:04:39.000+08:00
diff --git a/src/main/java/com/compont/Author_jpa.java b/src/main/java/com/compont/Author_jpa.java
@@ -0,0 +1,46 @@
+package com.compont;
+
+import javax.persistence.*;
+
+/**
+ * Created by zhuzhengping on 2017/3/13.
+ */
+
+@Entity
+@Table(name = "tp_author")
+public class Author_jpa {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    private Long id;
+
+    @Column(name = "real_name")
+    private String realname;
+
+    @Column(name = "nick_name")
+    private String nickName;
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getRealname() {
+        return realname;
+    }
+
+    public void setRealname(String realname) {
+        this.realname = realname;
+    }
+
+    public String getNickName() {
+        return nickName;
+    }
+
+    public void setNickName(String nickName) {
+        this.nickName = nickName;
+    }
+}
diff --git a/src/main/java/com/controller/AuthorController_mybatis.java b/src/main/java/com/controller/AuthorController_mybatis.java
@@ -15,7 +15,7 @@
  * Created by zhuzhengping on 2017/3/10.
  * 使用mybatis时，要注明扫描的包
  *
- * 
+ *
  */
 @RestController
 @RequestMapping(value = "/data/mybatis/author")
diff --git a/src/main/java/com/dao/UserRepository.java b/src/main/java/com/dao/UserRepository.java
@@ -13,6 +13,8 @@
 
 /**
  * Created by zhuzhengping on 2017/2/14.
+ * jpa 的实现方式有良知，一种是继承jparepository的方法
+ * 还有一种是调用entitymanage的方法
  */
 public interface UserRepository extends JpaRepository<User,Long> {
 
diff --git a/src/main/java/com/dao/impl/AuthorDaoImpl_jpa.java b/src/main/java/com/dao/impl/AuthorDaoImpl_jpa.java
@@ -0,0 +1,47 @@
+package com.dao.impl;
+
+import com.compont.Author;
+import com.dao.AuthorDao_jdbc;
+import org.springframework.stereotype.Repository;
+
+import javax.persistence.EntityManager;
+import javax.persistence.PersistenceContext;
+import java.util.List;
+
+/**
+ * Created by zhuzhengping on 2017/3/13.
+ * jpa 的实现方式有良知，一种是继承jparepository的方法
+ * 还有一种是调用entitymanage的方法
+ *
+ * 值得注意的是，这个的from对象名，而不是具体的表名
+ */
+@Repository
+public class AuthorDaoImpl_jpa implements AuthorDao_jdbc {
+
+    @PersistenceContext
+    private EntityManager entityManager;
+    @Override
+    public int add(Author author) {
+        return 0;
+    }
+
+    @Override
+    public int update(Author author) {
+        return 0;
+    }
+
+    @Override
+    public int delete(Long id) {
+        return 0;
+    }
+
+    @Override
+    public Author findAuthor(Long id) {
+        return this.entityManager.createQuery("select t from Author t where id = ?1",Author.class).setParameter(1,id).getSingleResult();
+    }
+
+    @Override
+    public List<Author> findAuthorList() {
+        return this.entityManager.createQuery("select t from Author t",Author.class).getResultList();
+    }
+}

Original file line number	Diff line number	Diff line change
`@@ -15,7 +15,7 @@`
`15`	`15`	`* Created by zhuzhengping on 2017/3/10.`
`16`	`16`	`* 使用mybatis时，要注明扫描的包`
`17`	`17`	`*`
`18`		`- *`
	`18`	`+ *`
`19`	`19`	`*/`
`20`	`20`	`@RestController`
`21`	`21`	`@RequestMapping(value = "/data/mybatis/author")`