getmapper精品文章

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  Mybatis是怎么工作的（二）

  ...下面看下執(zhí)行SQL的過程。 ClipsDAO clipsDAO = session.getMapper(ClipsDAO.class); ClipsEntity clipsEntity = clipsDAO.selectById(1); 查看session.getMapper()的實(shí)現(xiàn)： // org.apache.ibatis.sessi...

  paulli3 2019-08-16 14:20 評(píng)論0 收藏0
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  mybatis模仿1之我先看看

  ... // 獲取接口的實(shí)現(xiàn)類實(shí)例 IUserMapper mapper = session.getMapper(IUserMapper.class); // 調(diào)用方法 User user = mapper.findById(1); System.out.println(user.getName()); ...

  tylin 2019-08-19 10:55 評(píng)論0 收藏0
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  MyBatis原理概括

  ...的？ 平時(shí)我們使用如下代碼獲得一個(gè)Mapper對(duì)象。 public T getMapper(Class type) { return this.configuration.getMapper(type, this); } 通過調(diào)用DefaultSqlSession的getMapper方法并且傳入一個(gè)類型對(duì)象獲取，底層呢調(diào)用的是配置對(duì)象configuration的getMapper....

  mikasa 2019-08-15 18:03 評(píng)論0 收藏0
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  MyBatis學(xué)習(xí)筆記（二）——DAO的開發(fā)、配置文件、動(dòng)態(tài)SQL

  ...動(dòng)生成Mapper代理對(duì)象） UserMapper userMapper = sqlSession.getMapper(UserMapper.class); // 調(diào)用UserMapper的方法 User user = userMapper.findUserById(1); System.out.println(user); ...

  plus2047 2019-08-14 12:33 評(píng)論0 收藏0
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  【Mybatis系列】從源碼角度深度理解Mybatis的緩存特性

  ...e); // 自動(dòng)提交事務(wù) StudentMapper studentMapper = sqlSession.getMapper(StudentMapper.class); System.out.println(studentMapper.getStudentById(1)); System.out.println(studentMapper....

  Ku_Andrew 2019-08-15 10:47 評(píng)論0 收藏0
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  【Mybatis系列】從源碼角度深度理解Mybatis的緩存特性

  ...e); // 自動(dòng)提交事務(wù) StudentMapper studentMapper = sqlSession.getMapper(StudentMapper.class); System.out.println(studentMapper.getStudentById(1)); System.out.println(studentMapper....

  young.li 2019-08-06 13:22 評(píng)論0 收藏0
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  Mybatis-實(shí)現(xiàn)數(shù)據(jù)的增刪改查

  ...SessionFactory.openSession(); try { IUserOperation userOperation=session.getMapper(IUserOperation.class); List users = userOperation.selectUsers(userName); for(User user:users){ System.out.pr...

  darcrand 2019-08-16 17:17 評(píng)論0 收藏0
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  【深入淺出MyBatis筆記】MyBatis的解析和運(yùn)行原理

  ...、插入、更新、刪除的方法。 UserMapper userMapper = sqlSession.getMapper(UserMapper.class); 其實(shí)getMapper()方法拿到的mapper是通過Java動(dòng)態(tài)代理實(shí)現(xiàn)的。從getMapper()方法逐級(jí)往下看，可以發(fā)現(xiàn)在MapperRegistry類的getMapper()方法中會(huì)拿到一個(gè)MapperProxyFa...

  bitkylin 2019-08-15 17:56 評(píng)論0 收藏0
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  Mybatis初體驗(yàn)

  ... // 獲取映射類 StudentDao studentDao = sqlSession.getMapper(StudentDao.class); // 直接調(diào)用接口的方法，傳入?yún)?shù)id=1，返回Student對(duì)象 Student student = studentDao.getStudentById(1...

  flyer_dev 2019-08-14 14:31 評(píng)論0 收藏0
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  Mybatis源碼分析

  ...|--SqlSourceBuilder 創(chuàng)建Mapper代理對(duì)象 找入口：DefaultSqlSession#getMapper |--DefaultSqlSession#getMapper：獲取Mapper代理對(duì)象 ? |--Configuration#getMapper：獲取Mapper代理對(duì)象 ? |--MapperRegistry#getMapper：通過代理...

  lindroid 2019-08-19 10:13 評(píng)論0 收藏0
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  Mybatis基本映射--INSERT

  ... // 獲取Mapper接口 SysUserMapper sysUserMapper = sqlSession.getMapper(SysUserMapper.class); SysUser user = new SysUser(); user.setUserAccount(admin); user.setUserPass...

  csRyan 2019-08-16 12:32 評(píng)論0 收藏0
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  Mybatis基本映射--SELECT

  ...ssion(); try{ SysUserMapper sysUserMapper = sqlSession.getMapper(SysUserMapper.class); List users = sysUserMapper.selectAll(); users.forEach(user -> { ...

  printempw 2019-08-16 12:32 評(píng)論0 收藏0
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  解密Mybatis,手寫Mybatis框架（二）

  ...ory.openSession(); // 3.獲取對(duì)應(yīng)mapper TUserMapper mapper = sqlSession.getMapper(TUserMapper.class); //-------------第三階段------------- // 4.執(zhí)行查詢語句并返回結(jié)果 TUser user = mapper.selectByPrimaryKey(1); System...

  chuyao 2019-08-16 17:14 評(píng)論0 收藏0
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  推薦一個(gè) Java 實(shí)體映射工具 MapStruct

  ... public interface PersonConverter { PersonConverter INSTANCE = Mappers.getMapper(PersonConverter.class); @Mappings({ @Mapping(source = birthday, target = birth), @Mapping(so...

  wayneli 2019-08-16 12:30 評(píng)論0 收藏0