如何将一个List<Map<String,String>>类型的集合数据转换成json格式输出

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去网上下一个json-lib-2.4-jdk15.jar和ezmorph-1.0.6.jar，就可以调用

List<Map> list = new ArrayList<Map>();

String json = JSONArray.fromObject(list).toString();

------解决方案--------------------------------------------------------

Java code

List<Map<String,String>>

StringBuilder sb = new StringBuilder();
sb.append("{");
for(Map<String,String> map:list){
for (String key : map.keySet()) {
sb.append("\"").append(key).append("\":\"").append(map.get(key))
.append("\"").append(",");
}
}
sb.deleteCharAt(sb.lastIndexOf(","));
sb.append("}");