异步调用json的使用

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乱码处理：

?public void doPost(HttpServletRequest request, HttpServletResponse response)
???throws ServletException, IOException {
??response.setContentType("application/json ");
??response.setCharacterEncoding("utf-8");
??PrintWriter out = response.getWriter();
??
??String nameValue = "an&%\\&\"$#t";
??String jsonName = "results";
??StringBuilder json = new StringBuilder();
??json.append("{\""+jsonName+"\":[");
??
??for(int i=0;i<500;i++)
??{
???json.append("{");
???json.append("\"id\":\"1"+i+"\",\"name\":\"ant阿斯顿"+i+"\"");
???json.append("},");
??}
??json.append("{");
??json.append("\"id\":\"1\",\"name\":\""+string2Json(nameValue)+"\"");
??json.append("}");
??
??json.append("]}");
??out.write(json.toString());
?}
?
? public String string2Json(String s) {????????
???????? StringBuffer sb = new StringBuffer();????????
???????? for (int i=0; i<s.length(); i++) {??
???????????? char c = s.charAt(i);????
????????????? switch (c){??
????????????? case '\"':????????
????????????????? sb.append("\\\"");????????
????????????????? break;????????
????????????? case '\\':????????
????????????????? sb.append("\\\\");????????
????????????????? break;????????
????????????? case '/':????????
????????????????? sb.append("\\/");????????
????????????????? break;????????
????????????? case '\b':????????
????????????????? sb.append("\\b");????????
????????????????? break;????????
????????????? case '\f':????????
????????????????? sb.append("\\f");????????
????????????????? break;????????
????????????? case '\n':????????
????????????????? sb.append("\\n");????????
????????????????? break;????????
????????????? case '\r':????????
????????????????? sb.append("\\r");????????
????????????????? break;????????
????????????? case '\t':????????
????????????????? sb.append("\\t");????????
????????????????? break;????????
????????????? default:????????
????????????????? sb.append(c);?????
????????????? }??
????????? }??????
???????? return sb.toString();?????
???????? }
}