Tomcat6 和 Tomcat8 之间的 getRealPath

getRealPath between Tomcat6 and Tomcat8

在我的网络应用程序中,我有以下代码:

    if( context == null )
        throw new WMSException( "Missing session context." );

    String path  = context.getRealPath("");
    if( path == null )
        throw new WMSException( "Missing context real path." );

    WebSocket ws    = new WebSocket();
    String    sep   = "/";
    int       where = path.lastIndexOf( sep );
    if( where < 0 ){
        sep   = "\";
        where = path.lastIndexOf( sep );
    }

    path  = path.substring( 0, where );
    where = path.lastIndexOf( sep );
    path  = path.substring( 0, where ) + "/conf/wms";
    if( firstTime ){
        firstTime = false;
        System.out.println( "Getting configuration from " + path );
    }

    File      docFile = new File(path, "socket.xml");
    System.out.println( "Name " + docFile.getName() );
    System.out.println( "Path " + docFile.getPath() );

在 tomcat 6 中,由于 getRealPath 的工作方式,我得到以下信息:

/usr/share/tomcat6/conf/wms/socket.xml

在 tomcat 8 中,对于同一个 war 文件,我得到以下内容:

/opt/tomcat8/webapps/conf/wms/socket.xml

为什么 getRealPath 的工作方式不同以及我该如何解决?

好的,注意 Tomcat6 没有在末尾放置一个“/”但 Tomcat8 有,问题就解决了。所以我的新代码修复了它: LOGGER.info("Get socket for client: " + 客户);

    if( context == null )
        throw new WMSException( "Missing session context." );

    String path  = context.getRealPath("");
    if( path == null )
        throw new WMSException( "Missing context real path." );

    LOGGER.info( "Path 1 '" + path + "'");

    WebSocket ws    = new WebSocket();
    String    sep   = "/";
    int       where = path.lastIndexOf( sep );
    if( where < 0 ){
        sep   = "\";
        where = path.lastIndexOf( sep );
    }

    String newPath  = path.substring( 0, where );
    if( newPath.equals(path.substring(0, path.length() - 1 )))
    {
        where = newPath.lastIndexOf( sep );
        path  = newPath.substring( 0, where );
        LOGGER.info( "Path 2a '" + path + "'");
    }
    else
        path = newPath;

    LOGGER.info( "Path 2 '" + path + "'");
    where = path.lastIndexOf( sep );
    path  = path.substring( 0, where ) + "/conf/wms";
    LOGGER.info( "Path 3 '" + path + "'");
    if( firstTime ){
        firstTime = false;
        LOGGER.info( "Getting configuration from " + path );
    }

    LOGGER.info( "Path 4 '" + path + "'");
    File      docFile = new File(path, "socket.xml");
    LOGGER.info( "Name '" + docFile.getName() + "';Path '" + docFile.getPath() + "'");

关键是 if( newPath.equals(path.substring(0, path.length() - 1 ))) if 部分。显然,它可以通过其他方式解决。另外网上很多地方都暗示有这个问题,我只是漏接了路径末尾的“/”,所以没能正确上目录树。

获取 tomcat 主目录(我们有 "conf" 目录)并不容易,所以我们就是这样做的。不想更改内容,只是添加了那段代码以使其工作。

网上看到还有其他的解决方法