使用Java实现B/S系统常见的获取客户端信息功能！

2022-01-26 11:02:41

写B/S系统的时候，获取并将每个客户的信息保存起来，对于以后的维护和优化可以更有目的性

可以知道使用系统的用户中，使用最多的是哪种版本的浏览器，然后可以有针对性的，将系统兼容性尽量提高！

以下是工具类（ClientInfo.java）：

1 package com.ITPlus.tools;
2
3  import java.util.regex.Matcher;
4  import java.util.regex.Pattern;
5
6  /*
7  * 返回客户端信息工具类
8  * by netwild
9  */
10  public class ClientInfo {
11
12     private String info = "";
13     private String explorerVer = "未知";
14     private String OSVer = "未知";
15
16     /*
17      * 构造函数
18      * 参数：String request.getHeader("user-agent")
19      *
20      * IE7:Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C)
21      * IE8:Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C)
22      * Maxthon:Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; Maxthon 2.0)
23      * firefox:Mozilla/5.0 (Windows; U; Windows NT 6.1; zh-CN; rv:1.9.2.11) Gecko/20101012 Firefox/3.6.11
24      * Chrome:Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/534.7 (KHTML, like Gecko) Chrome/7.0.517.44 Safari/534.7
25      * Opera:Opera/9.80 (Windows NT 6.1; U; zh-cn) Presto/2.6.30 Version/10.63
26      *
27      * 操作系统：
28      * Win7 : Windows NT 6.1
29      * WinXP : Windows NT 5.1
30      */
31     public ClientInfo(String info){
32         this.info = info;
33     }
34
35     /*
36      * 获取核心浏览器名称
37      */
38     public String getExplorerName(){
39         String str = "未知";
40         Pattern pattern = Pattern.compile("");
41         Matcher matcher;
42         if(info.indexOf("MSIE") != -1){
43             str = "MSIE"; //微软IE
44              pattern = Pattern.compile(str + "\\s([0-9.]+)");
45         }else if(info.indexOf("Firefox") != -1){
46             str = "Firefox"; //火狐
47              pattern = Pattern.compile(str + "\\/([0-9.]+)");
48         }else if(info.indexOf("Chrome") != -1){
49             str = "Chrome"; //Google
50             pattern = Pattern.compile(str + "\\/([0-9.]+)");
51         }else if(info.indexOf("Opera") != -1){
52             str = "Opera"; //Opera
53             pattern = Pattern.compile("Version\\/([0-9.]+)");
54         }
55         matcher = pattern.matcher(info);
56         if(matcher.find()) explorerVer = matcher.group(1);
57         return str;
58     }
59
60     /*
61      * 获取核心浏览器版本
62      */
63     public String getExplorerVer(){
64         return this.explorerVer;
65     }
66
67     /*
68      * 获取浏览器插件名称（例如：遨游、世界之窗等）
69      */
70     public String getExplorerPlug(){
71         String str = "无";
72         if(info.indexOf("Maxthon") != -1)
73             str = "Maxthon"; //遨游
74         return str;
75     }
76
77     /*
78      * 获取操作系统名称
79      */
80     public String getOSName(){
81         String str = "未知";
82         Pattern pattern = Pattern.compile("");
83         Matcher matcher;
84         if(info.indexOf("Windows") != -1){
85             str = "Windows"; //Windows NT 6.1
86             pattern = Pattern.compile(str + "\\s([a-zA-Z0-9]+\\s[0-9.]+)");
87         }
88         matcher = pattern.matcher(info);
89         if(matcher.find()) OSVer = matcher.group(1);
90         return str;
91     }
92
93     /*
94      * 获取操作系统版本
95      */
96     public String getOSVer(){
97         return this.OSVer;
98     }
99 }

调用方式：

1 //初始化ClientInfo对象，唯一的参数：request.getHeader("user-agent")
2 ClientInfo clientInfo = new ClientInfo(request.getHeader("user-agent"));
3 //获取核心浏览器名称并保存到登录信息对象（loginlog）的相应属性中
4 loginlog.setExplorerName(clientInfo.getExplorerName());
5 loginlog.setExplorerVer(clientInfo.getExplorerVer());
6 loginlog.setExplorerPlug(clientInfo.getExplorerPlug());
7 loginlog.setOsname(clientInfo.getOSName());
8 loginlog.setOsver(clientInfo.getOSVer());

宠辱不惊，看庭前花开花落；去留无意，望天上云卷云舒

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