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                ### 執行模板SQL 像MyBatis那樣,BeetlSQL 支持模板SQL。 ```java { String sql = "select * from sys_user where department_id=#{id} and name=#{name}"; UserEntity paras = new UserEntity(); paras.setDepartmentId(1); paras.setName("lijz"); List<UserEntity> list = sqlManager.execute(sql,UserEntity.class,paras); } { //或者使用Map作為參數 String sql = "select * from sys_user where department_id=#{myDeptId} and name=#{myName}"; Map paras = new HashMap(); paras.put("myDeptId",1); paras.put("myName","lijz"); List<UserEntity> list = sqlManager.execute(sql,UserEntity.class,paras); } ``` 模板占位符默認是#{} BeetlSQL會輸出"?",如果使用${} 則原樣輸出內容,這個同MyBatis一致。 模板使用Beetl語法,因此支持復雜的SQL構建 ```java //使用Beetl模板語句 String sql = "select * from sys_user where 1=1 \n" + "-- @if(isNotEmpty(myDeptId)){\n" + " and department_id=#{myDeptId}\n" + "-- @}\n" + "and name=#{myName}"; Map paras = new HashMap(); paras.put("myDeptId",1); paras.put("myName","lijz"); List<UserEntity> list = sqlManager.execute(sql,UserEntity.class,paras); ``` 模板默認使用`-- @` 和 `回車`作為定界符,因為`--` 是sql注釋符號,這有助于idea或者其他IDE不會報錯 > 通常復雜的模板SQL推薦在文件里維護SQL,參考后面例子
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