在使用Java解析JSON时，因为缺少包，会报一些错误，这些都很容易解决的。
2014-12-18 10:51:55 org.apache.commons.httpclient.HttpMethodBase getResponseBody
警告: Going to buffer response body of large or unknown size. Using getResponseBodyAsStream instead is recommended.
{"code":0,"data":{"country":"\u4e2d\u56fd","country_id":"CN","area":"\u534e\u5317","area_id":"100000","region":"\u5317\u4eac\u5e02","region_id":"110000","city":"\u5317\u4eac\u5e02","city_id":"110000","county":"\u671d\u9633\u533a","county_id":"110105","isp":"\u8054\u901a","isp_id":"100026","ip":"125.34.6.143"}}
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/commons/lang/exception/NestableRuntimeException
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
at java.lang.ClassLoader.defineClass(ClassLoader.java:615)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
at http.GetIpAdd.main(GetIpAdd.java:21)
Caused by: java.lang.ClassNotFoundException: org.apache.commons.lang.exception.NestableRuntimeException
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
... 13 more这是因为缺少commons-lang包造成的。
2014-12-18 10:56:34 org.apache.commons.httpclient.HttpMethodBase getResponseBody
警告: Going to buffer response body of large or unknown size. Using getResponseBodyAsStream instead is recommended.
{"code":0,"data":{"country":"\u4e2d\u56fd","country_id":"CN","area":"\u534e\u5317","area_id":"100000","region":"\u5317\u4eac\u5e02","region_id":"110000","city":"\u5317\u4eac\u5e02","city_id":"110000","county":"\u671d\u9633\u533a","county_id":"110105","isp":"\u8054\u901a","isp_id":"100026","ip":"125.34.6.143"}}
Exception in thread "main" java.lang.NoClassDefFoundError: net/sf/ezmorph/Morpher
at http.GetIpAdd.main(GetIpAdd.java:19)
Caused by: java.lang.ClassNotFoundException: net.sf.ezmorph.Morpher
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
... 1 more这是因为缺少ezmorph造成的。
2014-12-18 10:59:02 org.apache.commons.httpclient.HttpMethodBase getResponseBody
警告: Going to buffer response body of large or unknown size. Using getResponseBodyAsStream instead is recommended.
{"code":0,"data":{"country":"\u4e2d\u56fd","country_id":"CN","area":"\u534e\u5317","area_id":"100000","region":"\u5317\u4eac\u5e02","region_id":"110000","city":"\u5317\u4eac\u5e02","city_id":"110000","county":"\u671d\u9633\u533a","county_id":"110105","isp":"\u8054\u901a","isp_id":"100026","ip":"125.34.6.143"}}
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/commons/collections/map/MultiKeyMap
at net.sf.json.JsonConfig.<init>(JsonConfig.java:56)
at net.sf.json.JSONObject.fromObject(JSONObject.java:145)
at http.GetIpAdd.main(GetIpAdd.java:19)
Caused by: java.lang.ClassNotFoundException: org.apache.commons.collections.map.MultiKeyMap
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
... 3 more这是因为缺少commons-collections包造成的。
下一篇，我将做一个解析淘宝API，根据IP获取城市，解析返回JSON的示例。可以根据示例和示例的JAR包，来做自己的一些应用。
但是切记要注意，在增加包时要注意包的版本，不要和原来工程引起包冲突。