GAE远程应用编程接口: RemoteApiInstaller安装总是失败

Question

GAE remote API for java：在App Engine客户端上配置远程应用编程接口

RemoteApiInsideAppEngineExample(String username, String password)
        throws IOException {
        // Authenticating with username and password is slow, so we'll do it
        // once during construction and then store the credentials for reuse.
        this.options = new RemoteApiOptions()
            .server("your_target_app_id.appspot.com", 443)
            .credentials(username, password);
        RemoteApiInstaller installer = new RemoteApiInstaller();
        installer.install(options);
        try {
            // Update the options with reusable credentials so we can skip
            // authentication on subsequent calls.
            options.reuseCredentials(username, installer.serializeCredentials());
        } finally {
            installer.uninstall();
        }
    }

在我的测试中，它总是抛出异常：

java.lang.IllegalArgumentException: charset may not be null or empty
    at com.google.appengine.repackaged.org.apache.commons.httpclient.util.EncodingUtil.getString(Unknown Source)
    at com.google.appengine.repackaged.org.apache.commons.httpclient.util.EncodingUtil.getString(Unknown Source)
    at com.google.appengine.tools.remoteapi.AppEngineClient$Response.getBodyAsString(AppEngineClient.java:138)
    at com.google.appengine.tools.remoteapi.RemoteApiInstaller.getAppIdFromServer(RemoteApiInstaller.java:318)
    at com.google.appengine.tools.remoteapi.RemoteApiInstaller.loginImpl(RemoteApiInstaller.java:278)
    at com.google.appengine.tools.remoteapi.RemoteApiInstaller.login(RemoteApiInstaller.java:239)
    at com.google.appengine.tools.remoteapi.RemoteApiInstaller.install(RemoteApiInstaller.java:106)

.

我确定用户名和密码是admin one，我使用的是GAE 1.7，联合登录，高复制数据存储。

有什么想法吗？谢谢。

Answer 1

我想我找到了答案，我使用联合登录，而目前GAE远程API不支持联合登录-太糟糕了，我花了很多时间在调试上。

Answer 2

代码在我身上起作用了。您只需要确保将"your_target_app_id"替换为applicationID