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一，工程pom文件中新增依赖，参考http://mvnrepository.com/artifact/org.json/json/20160212
<dependency> <groupId>org.json</groupId> <artifactId>json</artifactId> <version>20160212</version> </dependency>
二、用到的部分代码，用Json 字符串生成json对象，再从中获取需要的字段
/* 解析消息 */ String clientMsg = tuple.getStringByField("clientInfo"); /* covert string to json object */ JSONObject clientMsgObject = new JSONObject(clientMsg); String acSNStr = clientMsgObject.getString("acSN"); String clientMacStr = clientMsgObject.getString("clientMAC"); String onLineTimeStr = clientMsgObject.getString("onLineTime");
三、lib源码
https://github.com/stleary/JSON-java
四、javadoc
https://search.maven.org/#search%7Cgav%7C1%7Cg%3A%22org.json%22%20AND%20a%3A%22json%22
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原文地址：http://www.cnblogs.com/zhengchunhao/p/5644431.html
