在java web项目中虽然可以通过request.getParameterMap()很轻松的获得参数Map,但得到的Map和普通Map是不一样的,是被锁定的,不能像操作常规Map那样进行put、get等操作,该方法将得到参数Map返回为可操作的普通Map
代码片段(1)[全屏查看所有代码]
1. [代码][Java]代码
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/** * 从request中获得参数Map,并返回可读的Map
*
* @param request
* @return
*/
@SuppressWarnings ( "unchecked" )
public static Map getParameterMap(HttpServletRequest request) {
// 参数Map
Map properties = request.getParameterMap();
// 返回值Map
Map returnMap = new HashMap();
Iterator entries = properties.entrySet().iterator();
Map.Entry entry;
String name = "" ;
String value = "" ;
while (entries.hasNext()) {
entry = (Map.Entry) entries.next();
name = (String) entry.getKey();
Object valueObj = entry.getValue();
if ( null == valueObj){
value = "" ;
} else if (valueObj instanceof String[]){
String[] values = (String[])valueObj;
for ( int i= 0 ;i<values.length;i++){
value = values[i] + "," ;
}
value = value.substring( 0 , value.length()- 1 );
} else {
value = valueObj.toString();
}
returnMap.put(name, value);
}
return returnMap;
} |