使用FastJson解析Json数据
2016-01-15 09:57
751 查看
fastjson 是一个性能极好的用 Java 语言实现的 JSON 解析器和生成器,来自阿里巴巴的工程师开发。
主要特点:
快速FAST (比其它任何基于Java的解析器和生成器更快,包括jackson)
强大(支持普通JDK类包括任意Java Bean Class、Collection、Map、Date或enum)
零依赖(没有依赖其它任何类库除了JDK)
一 、生成Json:
JavaBean、List<JavaBean>、List<String>、List<Map<String,Object>>
[java]
view plaincopyprint?
String jsonString = JSON.toJSONString(obj);
二、解析Json:
(1)JavaBean
[java]
view plaincopyprint?
Class class= JSON.parseObject(jsonString, Class.class);
(2)List<JavaBean>
[java]
view plaincopyprint?
List<Class> class=JSON.parseArray((jsonString, Class.class);
[java]
view plaincopyprint?
List<String> listString = JSON.parseArray(jsonString, String.class);
[java]
view plaincopyprint?
List<Map<String, Object>> listMap = JSON.parseObject(jsonString, new TypeReference<List<Map<String,Object>>>(){});
现有这样的json数据:
外层是JSONObject,里面的list和selList是JSONArrary,再里面是JSONObject。其中的result也是JSONObject
[java]
view plaincopyprint?
JSONObject jsonObj = JSON.parseObject(rawText);
JSONArray result = jsonObj.getJSONArray("selList");
List<Link> links= JSON.parseArray(result.toJSONString(),Link.class);
在setter方法中可以进一步进行处理
[java]
view plaincopyprint?
public void setEntNameUrl(String entNameUrl) {
this.entNameUrl =Html.create(entNameUrl).links().get();
}
Link类中可以包含abnTime、entName、regNO等属性和对应的getter和setter方法,FastJson能自动映射。
通过下面的方法也可以处理:
[java]
view plaincopyprint?
JSONObject jsonObj = new JSONObject(rawText);
JSONArray jsonArray = result .getJSONArray("selList");
for (int i = 0; i < jsonArray.length; i++) {
}
主要特点:
快速FAST (比其它任何基于Java的解析器和生成器更快,包括jackson)
强大(支持普通JDK类包括任意Java Bean Class、Collection、Map、Date或enum)
零依赖(没有依赖其它任何类库除了JDK)
一 、生成Json:
JavaBean、List<JavaBean>、List<String>、List<Map<String,Object>>
[java]
view plaincopyprint?
String jsonString = JSON.toJSONString(obj);
String jsonString = JSON.toJSONString(obj);
二、解析Json:
(1)JavaBean
[java]
view plaincopyprint?
Class class= JSON.parseObject(jsonString, Class.class);
Class class= JSON.parseObject(jsonString, Class.class);
(2)List<JavaBean>
[java]
view plaincopyprint?
List<Class> class=JSON.parseArray((jsonString, Class.class);
List<Class> class=JSON.parseArray((jsonString, Class.class);(3)List<String>
[java]
view plaincopyprint?
List<String> listString = JSON.parseArray(jsonString, String.class);
List<String> listString = JSON.parseArray(jsonString, String.class);(4)List<Map<String,Object>>
[java]
view plaincopyprint?
List<Map<String, Object>> listMap = JSON.parseObject(jsonString, new TypeReference<List<Map<String,Object>>>(){});
List<Map<String, Object>> listMap = JSON.parseObject(jsonString, new TypeReference<List<Map<String,Object>>>(){});
现有这样的json数据:
{"totalRecords":2615, [javascript] view plaincopy在CODE上查看代码片派生到我的代码片 "result":{"code":"200","status":"success"}, "list":[{"unuAbnId":"0bcd930f-014c-1000-e003-5f160a0d0114", "entNo":"1c2e4ca8-00fa-1000-e000-74590a76bf0f", "regNO":"442000600169663", "entName":"x", "entType":"9910 ", "speCause":"3", "abnTime":"Mar 13, 2015 12:00:00 AM", "decOrg":"442020", "entNameUrl":"<a href=\".. ", "auditingFileNo":"15000684990326", "abnormalID":"fd74013d-014b-1000-e00a-72970a0d0114"},{...},{...},...], "pageNo":1, "pageSize":8, "url":"main/abnInfoPage", "selList":[{"unuAbnId":"0bcd930f-014c-1000-e003-5f0f0a0d0114", "entNo":"16da9629-0131-1000-e005-3effc0a803a8", "regNO":"442000602187424", "entName":"x", "entType":"9910 ", "speCause":"3", "abnTime":"Mar 13, 2015 12:00:00 AM", "decOrg":"442020", "entNameUrl":"<a href=\"..\">", "auditingFileNo":"15000684990319", "abnormalID":"fd74013d-014b-1000-e00a-72970a0d0114"},{...},{...},...], "topPageNo":1, "totalPages":327, "previousPageNo":0, "nextPageNo":2, "bottomPageNo":327 }
"result":{"code":"200","status":"success"}, "list":[{"unuAbnId":"0bcd930f-014c-1000-e003-5f160a0d0114", "entNo":"1c2e4ca8-00fa-1000-e000-74590a76bf0f", "regNO":"442000600169663", "entName":"x", "entType":"9910 ", "speCause":"3", "abnTime":"Mar 13, 2015 12:00:00 AM", "decOrg":"442020", "entNameUrl":"<a href=\".. ", "auditingFileNo":"15000684990326", "abnormalID":"fd74013d-014b-1000-e00a-72970a0d0114"},{...},{...},...], "pageNo":1, "pageSize":8, "url":"main/abnInfoPage", "selList":[{"unuAbnId":"0bcd930f-014c-1000-e003-5f0f0a0d0114", "entNo":"16da9629-0131-1000-e005-3effc0a803a8", "regNO":"442000602187424", "entName":"x", "entType":"9910 ", "speCause":"3", "abnTime":"Mar 13, 2015 12:00:00 AM", "decOrg":"442020", "entNameUrl":"<a href=\"..\">", "auditingFileNo":"15000684990319", "abnormalID":"fd74013d-014b-1000-e00a-72970a0d0114"},{...},{...},...], "topPageNo":1, "totalPages":327, "previousPageNo":0, "nextPageNo":2, "bottomPageNo":327 }其中list含有2615条数据,selList含有8条数据,目标是提取selList中entNameUrl的链接(不含a href=)
外层是JSONObject,里面的list和selList是JSONArrary,再里面是JSONObject。其中的result也是JSONObject
[java]
view plaincopyprint?
JSONObject jsonObj = JSON.parseObject(rawText);
JSONArray result = jsonObj.getJSONArray("selList");
List<Link> links= JSON.parseArray(result.toJSONString(),Link.class);
JSONObject jsonObj = JSON.parseObject(rawText); JSONArray result = jsonObj.getJSONArray("selList"); List<Link> links= JSON.parseArray(result.toJSONString(),Link.class);其中Link类中要有entNameUrl这个属性,并且setter和getter方法。
在setter方法中可以进一步进行处理
[java]
view plaincopyprint?
public void setEntNameUrl(String entNameUrl) {
this.entNameUrl =Html.create(entNameUrl).links().get();
}
public void setEntNameUrl(String entNameUrl) { this.entNameUrl =Html.create(entNameUrl).links().get(); }这里使用了自定方法,其功能就是取出字符串中的链接。
Link类中可以包含abnTime、entName、regNO等属性和对应的getter和setter方法,FastJson能自动映射。
通过下面的方法也可以处理:
[java]
view plaincopyprint?
JSONObject jsonObj = new JSONObject(rawText);
JSONArray jsonArray = result .getJSONArray("selList");
for (int i = 0; i < jsonArray.length; i++) {
}
相关文章推荐
- 使用 JavaScript 将 XML 转成 JSON
- js 解析xml字符串
- js获取页面高度赋值给div
- 一切皆为 JavaScript
- JavaScript回顾--13_dom简介
- 设置myeclipse编写extjs4.2时有代码提示
- JavaScript 总结几个提高性能知识点
- 图片旋转,鼠标滚轮缩放,镜像,切换图片js代码
- JavaScript焦点事件、鼠标事件和滚轮事件使用详解
- JavaScript提高性能知识点汇总
- [Javascript] How to use JavaScript's String.replace
- [Javascript] Regex: '$`', '$&', '$''
- [Javascript] Advanced Reduce: Composing Functions with Reduce
- 【JS复习笔记】01 基本语法
- c# webBrowser 模拟键盘输入及后台执行js
- JavaScript基础–闭包
- javascript构造函数、单例模式资料
- 应该如何在小,中,大型应用开发中组织前端js代码?
- JavaScript提高性能知识点汇总
- JavaScript焦点事件、鼠标事件和滚轮事件使用详解