java如何得到GET和POST请求URL和参数列表
2015-04-20 22:43
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在servlet中GET请求可以通过HttpServletRequest的getRequestURL方法和getQueryString()得到完整的请求路径和请求所有参数列表,POST的需要getParameterMap()方法遍历得到,不论GET或POST都可以通过getRequestURL+getParameterMap()来得到请求完整路径
package com.zuidaima
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Map;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class GetParams extends HttpServlet {
private static final long serialVersionUID = 1L;
public GetParams() {
super();
}
protected void doGet(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
PrintWriter writer = response.getWriter();
writer.println("GET " + request.getRequestURL() + " "
+ request.getQueryString());
Map<String, String[]> params = request.getParameterMap();
String queryString = "";
for (String key : params.keySet()) {
String[] values = params.get(key);
for (int i = 0; i < values.length; i++) {
String value = values[i];
queryString += key + "=" + value + "&";
}
}
// 去掉最后一个空格
queryString = queryString.substring(0, queryString.length() - 1);
writer.println("GET " + request.getRequestURL() + " " + queryString);
}
protected void doPost(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
PrintWriter writer = response.getWriter();
Map<String, String[]> params = request.getParameterMap();
String queryString = "";
for (String key : params.keySet()) {
String[] values = params.get(key);
for (int i = 0; i < values.length; i++) {
String value = values[i];
queryString += key + "=" + value + "&";
}
}
// 去掉最后一个空格
queryString = queryString.substring(0, queryString.length() - 1);
writer.println("POST " + request.getRequestURL() + " " + queryString);
}
}
package com.zuidaima
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Map;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class GetParams extends HttpServlet {
private static final long serialVersionUID = 1L;
public GetParams() {
super();
}
protected void doGet(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
PrintWriter writer = response.getWriter();
writer.println("GET " + request.getRequestURL() + " "
+ request.getQueryString());
Map<String, String[]> params = request.getParameterMap();
String queryString = "";
for (String key : params.keySet()) {
String[] values = params.get(key);
for (int i = 0; i < values.length; i++) {
String value = values[i];
queryString += key + "=" + value + "&";
}
}
// 去掉最后一个空格
queryString = queryString.substring(0, queryString.length() - 1);
writer.println("GET " + request.getRequestURL() + " " + queryString);
}
protected void doPost(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
PrintWriter writer = response.getWriter();
Map<String, String[]> params = request.getParameterMap();
String queryString = "";
for (String key : params.keySet()) {
String[] values = params.get(key);
for (int i = 0; i < values.length; i++) {
String value = values[i];
queryString += key + "=" + value + "&";
}
}
// 去掉最后一个空格
queryString = queryString.substring(0, queryString.length() - 1);
writer.println("POST " + request.getRequestURL() + " " + queryString);
}
}
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