添加: Mapper通用插件&分页插件

Author: zhaohaihao

pom.xml

@@ -37,6 +37,22 @@
 	    <artifactId>logback-core</artifactId>
 	    <version>1.1.11</version>
 	</dependency>
+	<!-- Mybatis 依赖 及 插件 -->
+	<dependency>
+	    <groupId>org.mybatis</groupId>
+	    <artifactId>mybatis</artifactId>
+	    <version>3.4.1</version>
+	</dependency>
+	<dependency>
+	    <groupId>tk.mybatis</groupId>
+	    <artifactId>mapper</artifactId>
+	    <version>3.4.3</version>
+	</dependency>
+       <dependency>
+           <groupId>com.github.pagehelper</groupId>
+           <artifactId>pagehelper</artifactId>
+           <version>4.2.1</version>
+       </dependency>
 	<!--代码生成器依赖-->
 	<dependency>
         <groupId>com.google.guava</groupId>

src/main/java/com/bigsea/sns/dao/MyMapper.java

@@ -0,0 +1,13 @@
+package com.bigsea.sns.dao;
+
+import tk.mybatis.mapper.common.BaseMapper;
+import tk.mybatis.mapper.common.ConditionMapper;
+import tk.mybatis.mapper.common.IdsMapper;
+import tk.mybatis.mapper.common.special.InsertListMapper;
+
+/**
+ * 通用 Mapper, 如果被扫描到会报异常
+ * Created by zhh on 2017/09/18.
+ */
+public interface MyMapper<T> extends BaseMapper<T>, ConditionMapper<T>, IdsMapper<T>, InsertListMapper<T> {
+}

src/main/java/com/bigsea/sns/dao/mapper/test/DemoMapper.java

@@ -1,46 +1,7 @@
 package com.bigsea.sns.dao.mapper.test;
 
+import com.bigsea.sns.dao.MyMapper;
 import com.bigsea.sns.model.test.Demo;
-import java.util.List;
 
-public interface DemoMapper {
-    /**
-     * This method was generated by MyBatis Generator.
-     * This method corresponds to the database table gen_test_demo
-     *
-     * @mbg.generated Wed Sep 20 18:58:31 GMT+08:00 2017
-     */
-    int deleteByPrimaryKey(Long id);
-
-    /**
-     * This method was generated by MyBatis Generator.
-     * This method corresponds to the database table gen_test_demo
-     *
-     * @mbg.generated Wed Sep 20 18:58:31 GMT+08:00 2017
-     */
-    int insert(Demo record);
-
-    /**
-     * This method was generated by MyBatis Generator.
-     * This method corresponds to the database table gen_test_demo
-     *
-     * @mbg.generated Wed Sep 20 18:58:31 GMT+08:00 2017
-     */
-    Demo selectByPrimaryKey(Long id);
-
-    /**
-     * This method was generated by MyBatis Generator.
-     * This method corresponds to the database table gen_test_demo
-     *
-     * @mbg.generated Wed Sep 20 18:58:31 GMT+08:00 2017
-     */
-    List<Demo> selectAll();
-
-    /**
-     * This method was generated by MyBatis Generator.
-     * This method corresponds to the database table gen_test_demo
-     *
-     * @mbg.generated Wed Sep 20 18:58:31 GMT+08:00 2017
-     */
-    int updateByPrimaryKey(Demo record);
+public interface DemoMapper extends MyMapper<Demo> {
 }

src/main/java/com/bigsea/sns/model/test/Demo.java

@@ -1,67 +1,52 @@
 package com.bigsea.sns.model.test;
 
+import javax.persistence.*;
+
+@Table(name = "gen_test_demo")
 public class Demo {
     /**
-     *
-     * This field was generated by MyBatis Generator.
-     * This field corresponds to the database column gen_test_demo.id
-     *
-     * @mbg.generated Wed Sep 20 18:58:31 GMT+08:00 2017
+     * 用户ID
      */
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
     private Long id;
 
     /**
-     *
-     * This field was generated by MyBatis Generator.
-     * This field corresponds to the database column gen_test_demo.name
-     *
-     * @mbg.generated Wed Sep 20 18:58:31 GMT+08:00 2017
+     * 用户姓名
      */
     private String name;
 
     /**
-     * This method was generated by MyBatis Generator.
-     * This method returns the value of the database column gen_test_demo.id
+     * 获取用户ID
      *
-     * @return the value of gen_test_demo.id
-     *
-     * @mbg.generated Wed Sep 20 18:58:31 GMT+08:00 2017
+     * @return id - 用户ID
      */
     public Long getId() {
         return id;
     }
 
     /**
-     * This method was generated by MyBatis Generator.
-     * This method sets the value of the database column gen_test_demo.id
-     *
-     * @param id the value for gen_test_demo.id
+     * 设置用户ID
      *
-     * @mbg.generated Wed Sep 20 18:58:31 GMT+08:00 2017
+     * @param id 用户ID
      */
     public void setId(Long id) {
         this.id = id;
     }
 
     /**
-     * This method was generated by MyBatis Generator.
-     * This method returns the value of the database column gen_test_demo.name
+     * 获取用户姓名
      *
-     * @return the value of gen_test_demo.name
-     *
-     * @mbg.generated Wed Sep 20 18:58:31 GMT+08:00 2017
+     * @return name - 用户姓名
      */
     public String getName() {
         return name;
     }
 
     /**
-     * This method was generated by MyBatis Generator.
-     * This method sets the value of the database column gen_test_demo.name
-     *
-     * @param name the value for gen_test_demo.name
+     * 设置用户姓名
      *
-     * @mbg.generated Wed Sep 20 18:58:31 GMT+08:00 2017
+     * @param name 用户姓名
      */
     public void setName(String name) {
         this.name = name;

src/main/java/com/bigsea/sns/service/AbstractService.java

@@ -0,0 +1,77 @@
+package com.bigsea.sns.service;
+
+import java.lang.reflect.Field;
+import java.lang.reflect.ParameterizedType;
+import java.util.List;
+
+import org.apache.ibatis.exceptions.TooManyResultsException;
+import org.springframework.beans.factory.annotation.Autowired;
+
+import com.bigsea.sns.dao.MyMapper;
+
+import tk.mybatis.mapper.entity.Condition;
+
+/**
+ * 基于通用MyBatis Mapper插件的Service接口的实现
+ */
+public abstract class AbstractService<T> {
+
+    @Autowired
+    protected MyMapper<T> mapper;
+
+    private Class<T> modelClass;    // 当前泛型真实类型的Class
+
+    public AbstractService() {
+        ParameterizedType pt = (ParameterizedType) this.getClass().getGenericSuperclass();
+        modelClass = (Class<T>) pt.getActualTypeArguments()[0];
+    }
+
+    public void save(T model) {
+        mapper.insertSelective(model);
+    }
+
+    public void save(List<T> models) {
+        mapper.insertList(models);
+    }
+
+    public void deleteById(Integer id) {
+        mapper.deleteByPrimaryKey(id);
+    }
+
+    public void deleteByIds(String ids) {
+        mapper.deleteByIds(ids);
+    }
+
+    public void update(T model) {
+        mapper.updateByPrimaryKeySelective(model);
+    }
+
+    public T findById(Integer id) {
+        return mapper.selectByPrimaryKey(id);
+    }
+
+    @SuppressWarnings("unchecked")
+	public T findBy(String fieldName, Object value) throws TooManyResultsException {
+        try {
+            T model = modelClass.newInstance();
+            Field field = modelClass.getDeclaredField(fieldName);
+            field.setAccessible(true);
+            field.set(model, value);
+            return mapper.selectOne(model);
+        } catch (ReflectiveOperationException e) {
+            throw new RuntimeException("查询操作异常!");
+        }
+    }
+
+    public List<T> findByIds(String ids) {
+        return mapper.selectByIds(ids);
+    }
+
+    public List<T> findByCondition(Condition condition) {
+        return mapper.selectByCondition(condition);
+    }
+
+    public List<T> findAll() {
+        return mapper.selectAll();
+    }
+}

src/main/java/com/bigsea/sns/service/Service.java

@@ -0,0 +1,79 @@
+package com.bigsea.sns.service;
+
+import org.apache.ibatis.exceptions.TooManyResultsException;
+import tk.mybatis.mapper.entity.Condition;
+
+import java.util.List;
+
+/**
+ * Service 层 基础接口，其他Service 接口 请继承该接口
+ * Created by zhh on 2017/09/18.
+ */
+public interface Service<T> {
+	
+	/**
+	 * 插入数据
+	 * @param model
+	 */
+    void save(T model);
+    
+    /**
+     * 批量插入数据
+     * @param models
+     */
+    void save(List<T> models);
+    
+    /**
+     * 通过主鍵刪除
+     * @param id
+     */
+    void deleteById(Integer id);
+    
+    /**
+     * 批量刪除 
+     * @param ids eg：ids -> "1,2,3,4"
+     */
+    void deleteByIds(String ids);
+    
+    /**
+     * 更新
+     * @param model
+     */
+    void update(T model);
+    
+    /**
+     * 通过ID查找
+     * @param id
+     * @return
+     */
+    T findById(Integer id);
+    
+    /**
+     * 通过Model中某个成员变量名称（非数据表中column的名称）查找,value需符合unique约束
+     * @param fieldName
+     * @param value
+     * @return
+     * @throws TooManyResultsException
+     */
+    T findBy(String fieldName, Object value) throws TooManyResultsException;
+    
+    /**
+     * 通过多个ID查找
+     * @param ids eg：ids -> "1,2,3,4"
+     * @return
+     */
+    List<T> findByIds(String ids);
+    
+    /**
+     * 根据条件查找
+     * @param condition
+     * @return
+     */
+    List<T> findByCondition(Condition condition);
+    
+    /**
+     * 获取所有
+     * @return
+     */
+    List<T> findAll();
+}

src/main/java/com/bigsea/sns/service/impl/test/DemoServiceImpl.java

@@ -3,18 +3,18 @@
 import com.bigsea.sns.dao.mapper.test.DemoMapper;
 import com.bigsea.sns.model.test.Demo;
 import com.bigsea.sns.service.test.DemoService;
+import com.bigsea.sns.service.AbstractService;
 import org.springframework.stereotype.Service;
-
-import javax.annotation.Resource;
-
+import org.springframework.beans.factory.annotation.Autowired;
 
 /**
  *
- * Created by zhh on 2017/09/20.
+ * Created by zhh on 2017/09/21.
  */
 @Service
-public class DemoServiceImpl implements DemoService {
-    @Resource
+public class DemoServiceImpl extends AbstractService<Demo> implements DemoService {
+
+    @Autowired
     private DemoMapper genTestDemoMapper;
 
 }

src/main/java/com/bigsea/sns/service/test/DemoService.java

@@ -1,10 +1,11 @@
 package com.bigsea.sns.service.test;
 import com.bigsea.sns.model.test.Demo;
+import com.bigsea.sns.service.Service;
 
 /**
  *
- * Created by zhh on 2017/09/20.
+ * Created by zhh on 2017/09/21.
  */
-public interface DemoService {
+public interface DemoService extends Service<Demo> {
 
 }

src/main/java/com/bigsea/sns/web/controller/test/DemoController.java

@@ -11,7 +11,7 @@
 
 /**
  *
- * Created by zhh on 2017/09/20.
+ * Created by zhh on 2017/09/21.
  */
 @Controller
 @RequestMapping("/demo/")