引用jackson

/**
*  json轉Map，轉bean，轉List<bean> by http://blog.csdn.net/21aspnet/
*  需要jackjson jar包
*/
public class JsonUtil {/*** Object轉Json*/public static String ObjectToJson(Object value) {try {ObjectMapper mapper = new ObjectMapper();String js = mapper.writeValueAsString(value);return js;} catch (Exception e) {System.out.println(e.toString());return "Error";}}/*** Json轉Object*/public static Object JsonToList(String json, Class<?> bean) throws Exception {ObjectMapper mapper = new ObjectMapper();JavaType javaType = mapper.getTypeFactory().constructParametricType(List.class, bean);return mapper.readValue(json, javaType);}/*** Json轉Object*/public static Object JsonToBean(String json, Class<?> bean) throws Exception {ObjectMapper mapper = new ObjectMapper();JavaType javaType = mapper.getTypeFactory().uncheckedSimpleType(bean);return mapper.readValue(json, javaType);}/*** Json轉Map*/public static Map<String, Map<String, String>> JsonToMap(String json) {try {ObjectMapper mapper = new ObjectMapper();Map<String, Map<String, String>> maps = mapper.readValue(json, Map.class);                      return maps;} catch (Exception e) {System.out.println(e.toString());return null;}}
}

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