1.获取所有参数map集合
1 map<String,String [] >getParameterMap()
2.根据名称获取参数值（数组）
1 String[] fetParameterValues(String name)
3.根据名称获取参数值（单个值）
1 String getParameter(String name)
案例：
1 //1. 获取所有参数的Map集合
2 Map<String, String[]> map = req.getParameterMap();
3 for (String key : map.keySet()) {
4 // username:zhangsan lisi
5 System.out.print(key+":");
6
7 //获取值
8 String[] values = map.get(key);
9 for (String value : values) {
10 System.out.print(value + " ");
11 }
12
13 System.out.println();
14 }
1 String[] hobbies = req.getParameterValues("hobby");
2 for (String hobby : hobbies) {
3 System.out.println(hobby);
4 }
1 String username = req.getParameter("username");
2 String password = req.getParameter("password");
3 System.out.println(username);
4 System.out.println(password)
标签：username,请求,req,request,System,获取,String,out From： https://www.cnblogs.com/daitu66/p/17039572.html