两种接口传送数据协议(xml和json)

   规范性接口开发中，一般数据是以json或者xml的格式传送的，而不是字符串的形式直接返回给接口调用者；下面介绍这两种格式的编写方法。

   下面两种数据传送方式是接口输出端的编写。需引入的包如下：

<span style="font-family:KaiTi_GB2312;font-size:18px;">importjava.io.PrintWriter;

importjava.io.StringWriter;

importjavax.servlet.http.HttpServletResponse;

importorg.dom4j.Document;

import org.dom4j.io.OutputFormat;

import org.dom4j.io.XMLWriter;</span>

1.传送 XML 协议的格式数据

<span style="font-family:KaiTi_GB2312;font-size:18px;">   /**

* xml 格式数据

*

* @param response

* @param doc

*/

publicstaticvoidoutDocToXML(HttpServletResponse response, Document doc) {

// 以下代码请注意编码顺序

response.setCharacterEncoding("utf-8");

response.setContentType("text/xml;charset=utf-8");

response.setHeader("Pragma", "no-cache");

response.setHeader("Cache-Control", "no-cache");

response.setDateHeader("Expires", 0);

PrintWriter out = null;

StringWriter writer = new StringWriter();

OutputFormat format = OutputFormat.createPrettyPrint(); //

format.setEncoding("UTF-8");

XMLWriter xmlwriter = new XMLWriter(writer,format);

try {

out = response.getWriter();

xmlwriter.write(doc);

} catch (Exception e) {

e.printStackTrace();

}

out.print(writer.toString());

out.close();

}</span>

 

2.传送 json 协议的格式数据

<span style="font-family:KaiTi_GB2312;font-size:18px;">/**

* json 数据格式

*

* @param response

* @param data

* @param type

*/

protectedvoidsendData(HttpServletResponse response, Object data) {

if (data != null) {

response.setCharacterEncoding("utf-8");

response.setContentType("application/json;charset=UTF-8");

response.setHeader("Pragma", "no-cache");

response.setHeader("Cache-Control", "no-cache");

response.setDateHeader("Expires", 0);

PrintWriter out = null;

try {

out = response.getWriter();

out.print(data);

out.close();

} catch (Exception e) {

e.printStackTrace();

}

}

}</span>

转正请指明出处：blog.csdn.net/yangkai_hudong