String r = ""; ObjectMapper mapper = new ObjectMapper(); r = mapper.writeValueAsString(credential); System.out.println(r);
jackson-databind.2.2.3.jar
输出一个对象的所有属性的值,可以不用反射机制，用JSON处理更方便
原文：http://www.cnblogs.com/fhtwins/p/3994172.html
