/**
* 从请求中取出所有参数列表,
* 然后和工作项id一起保存到数据库中
* @param req HttpServletRequest
*/
protected void doSaveParameters(HttpServletRequest req){
Map pMap = req.getParameterMap();
System.out.println("zqbtest*******Map:"+pMap);
Iterator entries = pMap.keySet().iterator();
System.out.println("zqbtest*****Iterator::"+entries);
while(entries.hasNext()){
Map.Entry entry = (Map.Entry)entries.next();//此处出错！！！
String key = (String)entry.getKey();
String value = (String)entry.getValue();
mtst.insertSaveParameter(workItemId,key,value);
}
}
后台打印信息：
zqbtest*******Map:{reassign=[Ljava.lang.String;@6e9cc3, fxcfh=[Ljava.lang.String
;@75d174, bsize=[Ljava.lang.String;@a4a32, readonlysendpersons=[Ljava.lang.Strin
g;@d539f, specialsendstep=[Ljava.lang.String;@6d0085, nextsteppersons=[Ljava.lan
g.String;@3d4817, fxfba=[Ljava.lang.String;@47e54e, specialsendpersons=[Ljava.la
ng.String;@1f91ac, fxfaaX=[Ljava.lang.String;@14f467, Unknown5copy=[Ljava.lang.S
tring;@39d072, Unknown3=[Ljava.lang.String;@2422d9}
zqbtest*****Iterator::java.util.HashMap$HashIterator@6c12f3
抛出异常如下：
HTTP Status 500 -
--------------------------------------------------------------------------------
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling
this request.
exception
java.lang.ClassCastException: java.lang.String
at com.neusoft.fd.processor.WFProcessor.doSaveParameters(WFProcessor.java:1149)
程序经过修改后的代码：
/**
* 从请求中取出所有参数列表,
* 然后和工作项id一起保存到数据库中
* @param req HttpServletRequest
*/
protected void doSaveParameters(HttpServletRequest req){
Map pMap = req.getParameterMap();
Iterator entries = pMap.entrySet().iterator();
while(entries.hasNext()){
Map.Entry entry = (java.util.Map.Entry) entries.next();
String key = (String) entry.getKey();
String[] values = (String[])entry.getValue();
for (int i = 0; i < values.length; i++) {
String value = values[i];
mtst.insertSaveParameter(workItemId, (String) key, value);
}
//String value = (String)pMap.get(key);
}
}
错误的原因如下：
1、 Iterator entries = pMap.entrySet().iterator();
要用entrySet()取出Iterator；
2、entries.next() 得出的是java.util.Map.Entry这个是Map接口的内部接口；
它的getValue方法，返回的是一个String[]；
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