jackson 将json转成bean

public static void main(String[] args) {
		// TODO Auto-generated method stub

		String careersJson = "[{'from_date':'2001-09-21','to_date':'2011-04-02','company':'人寿保险','department':'xxx','position':'主管' },{'from_date':'0002-12-01','to_date':'2011-04-02', 'company':'人寿保险','department':'xxx','position':'主管' }]";
		ObjectMapper mapper = new ObjectMapper();
		mapper.configure(JsonParser.Feature.ALLOW_SINGLE_QUOTES, true); 
		try {
			@SuppressWarnings("unchecked")
			List<Map<String, Object>> rawContatcs = mapper.readValue(careersJson, List.class);
			for (Map<String, Object> item : rawContatcs) {
				if(String.valueOf(item.get("from_date"))!=null)
				{
					
					System.out.println(Date.valueOf((String) item.get("from_date")));
				}
				else if(String.valueOf(item.get("to_date"))!=null)
				{
					
					System.out.println(Date.valueOf((String) item.get("to_date")));
				}
					
			}
			
			
		} catch (Exception e) {
			e.printStackTrace();
		}
		
	
	}

 

如果去掉

mapper.configure(JsonParser.Feature.ALLOW_SINGLE_QUOTES, true); 

 

就会报错：

org.codehaus.jackson.JsonParseException: Unexpected character (''' (code 39)): was expecting double-quote to start field name
 at [Source: java.io.StringReader@1e0be38; line: 1, column: 4]
	at org.codehaus.jackson.JsonParser._constructError(JsonParser.java:1291)
	at org.codehaus.jackson.impl.JsonParserMinimalBase._reportError(JsonParserMinimalBase.java:385)
	at org.codehaus.jackson.impl.JsonParserMinimalBase._reportUnexpectedChar(JsonParserMinimalBase.java:306)
	at org.codehaus.jackson.impl.ReaderBasedParser._handleUnusualFieldName(ReaderBasedParser.java:512)
	at org.codehaus.jackson.impl.ReaderBasedParser._parseFieldName(ReaderBasedParser.java:405)
	at org.codehaus.jackson.impl.ReaderBasedParser.nextToken(ReaderBasedParser.java:295)
	at org.codehaus.jackson.map.deser.UntypedObjectDeserializer.mapObject(UntypedObjectDeserializer.java:173)
	at org.codehaus.jackson.map.deser.UntypedObjectDeserializer.deserialize(UntypedObjectDeserializer.java:76)
	at org.codehaus.jackson.map.deser.CollectionDeserializer.deserialize(CollectionDeserializer.java:120)
	at org.codehaus.jackson.map.deser.CollectionDeserializer.deserialize(CollectionDeserializer.java:97)
	at org.codehaus.jackson.map.deser.CollectionDeserializer.deserialize(CollectionDeserializer.java:26)
	at org.codehaus.jackson.map.ObjectMapper._readMapAndClose(ObjectMapper.java:2395)
	at org.codehaus.jackson.map.ObjectMapper.readValue(ObjectMapper.java:1595)
	at com.webbook.action.Test.main(Test.java:26)

 

 

 

评论

5 楼 woshixushigang 2012-09-24  

yu_duo 写道

士刚，我做jiaozhu的task，结果找到了你~~

哈哈，秋颖啊

4 楼 yu_duo 2012-09-24  

士刚，我做jiaozhu的task，结果找到了你~~

3 楼 雪域无痕 2012-02-02  

woshixushigang 写道

json串需要双引号的，如果你解析Json串，但要解析的json 不是这种形式的　ａ：＂＂　那就没法解析了。

谢谢了

2 楼 woshixushigang 2012-02-01  

json串需要双引号的，如果你解析Json串，但要解析的json 不是这种形式的　ａ：＂＂　那就没法解析了。

1 楼 雪域无痕 2012-02-01  

我保对象转换正json字符串时报了这个异常了。能说说是因为什么么？