Java如何获取servlet请求标头信息？
package org.nhooo.example.servlet;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Enumeration;
import javax.servlet.Servlet;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class ServletRequestHeader extends HttpServlet implements Servlet {
protected void doGet(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
response.setContentType("text/html");
PrintWriter writer = response.getWriter();
Enumeration enumeration = request.getHeaderNames();
while (enumeration.hasMoreElements()) {
//获取请求标头名称
String name = (String) enumeration.nextElement();
//获取请求标头值
String value = request.getHeader(name);
writer.println("Header [" + name + " = " + value + "<br/>");
//读取请求值，以获取具有多个标题信息
//价值观。
Enumeration values = request.getHeaders(name);
while (values.hasMoreElements()) {
value = (String) values.nextElement();
writer.println(" Header [" + name + " = " + value + "<br/>");
}
}
writer.close();
}
protected void doPost(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
//没做什么！
}
}
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