Question

我在将简单的HashMap映射到嵌套的Hashmap时遇到了麻烦我的简单源映射有一个sourceMapKey和一个sourceMapValue。该源映射应该映射到目标映射。目标映射应该以包含映射的sourceMapKey和sourceMapValue的targetSubMap结束，如下所示：

 {targetSubMap={targetMapkey=sourceMapValue}}

我的代码如下所示：

HashMap<Object, Object> sourceMap = new HashMap<Object, Object>();  
sourceMap.put("sourceMapKey", "sourceMapValue");
List<String> myMappingFiles = new ArrayList<String>();
myMappingFiles.add("file:\\C:\\mapping.xml");
DozerBeanMapper mapper = new DozerBeanMapper();
mapper.setMappingFiles(myMappingFiles);
HashMap<Object, Object> targetMap = mapper.map(sourceMap, HashMap.class, "MainMap");

我的mapping.xml如下所示：

 <mappings xmlns="http://dozer.sourceforge.net"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://dozer.sourceforge.net http://dozer.sourceforge.net/schema/beanmapping.xsd">  

 <mapping map-id="MainMap">
  <class-a is-accessible="true">java.util.HashMap</class-a>
  <class-b is-accessible="true">java.util.HashMap</class-b>
  <field map-id="SubMap">
   <a>this</a>
   <b key="targetSubMap">this</b>
   <a-hint>java.util.HashMap</a-hint>
   <b-hint>java.util.HashMap</b-hint>
  </field>
 </mapping>  

 <mapping map-id="SubMap">
 <class-a>java.util.HashMap</class-a>
 <class-b>java.util.HashMap</class-b>
 <field>
   <a key="sourceMapKey">this</a>
   <b key="targetMapKey">this</b>
   <a-hint>java.util.HashMap</a-hint>
   <b-hint>java.util.HashMap</b-hint>
 </field>
 </mapping>
</mappings>

我在目标地图中得到的结果是：

{targetSubMap=null}

我做错了什么？

使用Dozer将单级映射映射到嵌套映射

0 个答案: