Question: Found multiple occurrences of org.json.JSONObject on the class path: jar:file:/C:/Users/nmj/.m2/repository/com/vaadin/external/google/android-json/0.0.20131108.vaadin1/android-json-0.0.20131108.vaadin1.jar!/org/json/JSONObject.class jar:fil…
先是报 java.lang.NoClassDefFoundError: net/sf/json/JSONObject 这个错误, 打开项目属性找到java build path中的libaries,找不到json相关的包, 我就手动将json-lib-2.3-jdk15.jar这个包引入,但是还是报同样的错误, 上网搜了下,有人说还需要把这个包放到对应TOMCAT/LIB目录下, 于是照做,终于不报这个错误了,但是报了其他错误: org.apache.commons.lang.exception…
import org.json.JSONArray; import org.json.JSONException; import org.json.JSONObject; public static void main(String[] args) { String str = "{'TI':[{'value':'aa1','count':10},{'value':'aa2','count':15},{'value':'aa3','count':20}]," + "'AB':…
http://my.oschina.net/wangwu91/blog/340721 net.sf.json.JSONObject 和org.json.JSONObject  的差别. 一.创建json对象 String str = "{\"code\":\"0000\", \"msg\":{\"availableBalance\":31503079.02}} org.json.JSONObject: JSONObj…
最近写jsp遇到一系列的低级错误,记录下来权当前车之鉴吧. 错误提示: SEVERE: Servlet.service() for servlet jsp threw exceptionorg.apache.jasper.JasperException: /jsp04/Zj04_sj_test1_1.jsp(2,1) Page directive must not have multiple occurrences of pageencoding 程序代码如下: <%@ page languag…
结论:org.json.JSONObject的getString如果取不到对应的key会抛出异常,optString则不会 /** * Returns the value mapped by {@code name} if it exists, coercing it if * necessary, or throws if no such mapping exists. * * @throws JSONException if no such mapping exists. */ public…
严重: Servlet.service() for servlet jsp threw exception org.apache.jasper.JasperException: /jsp.jsp(1,2) Page directive: illegal to have multiple occurrences of contentType with different values (old: text/html; charset=UTF-8, new: text/html; carset=UT…
18/12/07 01:09:03 INFO mapreduce.ImportJobBase: Beginning import of staffException in thread "main" java.lang.NoClassDefFoundError: org/json/JSONObject at org.apache.sqoop.util.SqoopJsonUtil.getJsonStringforMap(SqoopJsonUtil.java:42) at org.apac…
本文为博主原创,未经允许,不得转载: 先还原错误: org.apache.jasper.JasperException: /WEB-INF/view/../../../../common/common1.jsp (line: 7, column: 1) Page directive must not have multiple occurrences of pageencoding org.apache.jasper.compiler.DefaultErrorHandler.jspError(D…
文章待补充,先写写以下知识点好了. NULL值处理之 net.sf.json.JSONObject 和 com.alibaba.fastjson.JSONObject区别 JSON作为一个轻量级的文本数据交换格式常常用于web后台的数据封装和传输.JSON及其工具包给开发带来非常多的好处,提高了开发效率.然而,世间总是免不了存在一些坑,吾辈需笑看人生路,潜心研码.NULL值作为一个特殊情况,在处理的时候尤其需要小心处理.不幸的是,随着我们使用的工具类的作者的不同,对NULL的处理也有不同.此处,…