标签：www dns this art 访问 其他 bsp pre not
# Copyright (c) 1993-2009 Microsoft Corp. # # This is a sample HOSTS file used by Microsoft TCP/IP for Windows. # # This file contains the mappings of IP addresses to host names. Each # entry should be kept on an individual line. The IP address should # be placed in the first column followed by the corresponding host name. # The IP address and the host name should be separated by at least one # space. # # Additionally, comments (such as these) may be inserted on individual # lines or following the machine name denoted by a ‘#‘ symbol. # # For example: # # 102.54.94.97 rhino.acme.com # source server # 38.25.63.10 x.acme.com # x client host # localhost name resolution is handled within DNS itself. # 127.0.0.1 localhost # ::1 localhost
在最后新增如下内容：
127.0.0.1 www.163.com
表示域名“www.163.com”指向的ip为127.0.0.1，即本地。修改后文件内容如下：
# Copyright (c) 1993-2009 Microsoft Corp. # # This is a sample HOSTS file used by Microsoft TCP/IP for Windows. # # This file contains the mappings of IP addresses to host names. Each # entry should be kept on an individual line. The IP address should # be placed in the first column followed by the corresponding host name. # The IP address and the host name should be separated by at least one # space. # # Additionally, comments (such as these) may be inserted on individual # lines or following the machine name denoted by a ‘#‘ symbol. # # For example: # # 102.54.94.97 rhino.acme.com # source server # 38.25.63.10 x.acme.com # x client host # localhost name resolution is handled within DNS itself. # 127.0.0.1 localhost # ::1 localhost 127.0.0.1 www.163.com
修改后用浏览器访问“www.163.com”会被解析到127.0.0.1，导致无法显示该网页。
为了进一步验证，使用tomcat在本地启动一个Web服务。tomcat版本为：apache-tomcat-8.5.4，其他版本应该操作类似。
下载解压tomcat后，运行apache-tomcat-8.5.4\bin\startup.bat，待tomcat启动成功，本地就有了一个Web服务了。
这时再访问"www.163.com:8080"，就可以看到有页面内容了：
为什么要加上8080呢，因为这是端口号，tomcat开启的Web服务默认使用8080端口，而浏览器中默认的是80端口，所以必需要显示指明。也可以修改tomcat安装目录下的config/server.xml中的8080为80，这样就不用在访问时显式指定端口了。
这就是通过修改hosts文件来使域名指向某个IP的方式了，如果需要添加多条配置，直接再新增一行内容就行了。
标签：www dns this art 访问 其他 bsp pre not
原文地址：https://www.cnblogs.com/toSeeMyDream/p/9313440.html
