jackson使用

jackson依赖包：

<dependency><groupId>org.codehaus.jackson</groupId><artifactId>jackson-mapper-asl</artifactId><version>1.9.11</version></dependency>

List转json

List<Codedict> lists=codedictService.findByProperty("ccatalog",catalog);ObjectMapper mapper=new ObjectMapper();String json=mapper.writeValueAsString(lists);