小编Nib*_*ain的帖子

我最近开始使用 flutter，在我的项目中我必须用计时器录制视频。当我单击停止按钮停止视频录制时，出现此错误。我尝试显示路径并得到了路径

I/flutter (19037): Video recorded to /data/user/0/app.package/cache/REC8929992591965700575.mp4


I/flutter (19037): Error: INVALID_PATH
I/flutter (19037): Error Message: The platform "TargetPlatform.android" did not return a path while reporting success. The platform should always return a valid path or report an error.

I/flutter (21723): Video recorded to /data/user/0/app.package/cache/REC4634449859696013797.mp4
E/flutter (21723): [ERROR:flutter/lib/ui/ui_dart_state.cc(209)] Unhandled Exception: CameraException(INVALID_PATH, The platform "TargetPlatform.android" did not return a path while reporting success. The platform should always return a valid path or report an error.)

使用这个插件：

  camera: ^0.9.4+5
  video_player: ^2.2.10

我的代码： …

如何resultset.getInt(1)将此值发送到另一个jsp页面,我正在尝试这个但不起作用.

<td><a href="result.jsp?Id="+<%=resultset.getInt(1)%> ><%= resultset.getInt(1) %></a></td>

result.jsp中

<% 
String ss =request.getParameter("Id");
System.out.println("my value" + ss);
%>

我""进去了result.jsp.

我在生产服务器上部署了我的项目并获得了以下错误.

这是一个现场项目,所以,在收到错误后,我用以前的版本替换它运行正常,但现在也抛出相同的错误.请告诉我可能是什么问题？

错误:

HTTP Status 500 - org.apache.jasper.JasperException: java.lang.NullPointerException

--------------------------------------------------------------------------------

type Exception report

message org.apache.jasper.JasperException: java.lang.NullPointerException

description The server encountered an internal error that prevented it from fulfilling this request.

exception 

org.apache.jasper.JasperException: org.apache.jasper.JasperException: java.lang.NullPointerException
    org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:502)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:412)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:717)


root cause 

org.apache.jasper.JasperException: java.lang.NullPointerException
    org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:502)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:430)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    org.apache.jasper.runtime.PageContextImpl.doForward(PageContextImpl.java:709)
    org.apache.jasper.runtime.PageContextImpl.forward(PageContextImpl.java:680)
    org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:821)
    org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:794)
    org.apache.jsp.LPSSuppIndex_jsp._jspService(LPSSuppIndex_jsp.java:393)
    org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:388)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:717)


root cause 

java.lang.NullPointerException
    org.apache.jsp.error_jsp._jspService(error_jsp.java:124)
    org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:388)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    org.apache.jasper.runtime.PageContextImpl.doForward(PageContextImpl.java:709)
    org.apache.jasper.runtime.PageContextImpl.forward(PageContextImpl.java:680)
    org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:821)
    org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:794)
    org.apache.jsp.LPSSuppIndex_jsp._jspService(LPSSuppIndex_jsp.java:393)
    org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:388)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:717) …

我正在尝试创建一个应用程序来显示建筑物的室内地图,并在任何人点击该建筑物的任何部分时打开对话框.它与Android版Google地图6.0相似.但室内地图目前仅在美国和日本的指定地点提供.

我没有得到我应该使用WebView(因为它具有滚动和缩放功能)或ImageView.如何在谷歌地图的图像中显示标记？我应该如何保存从建筑物的一个部分到另一个部分的方向？

建议非常感谢.谢谢

我试图在tomcat服务器上传视频,但上传一个视频后我得到以下错误:

错误日志:

org.apache.jasper.JasperException: An exception occurred processing JSP page /SaveVideos.jsp at line 34

31:         pos = file.indexOf("\n", pos) + 1;
32:         int boundaryLocation = file.indexOf(boundary, pos) - 4;
33:         int startPos = ((file.substring(0, pos)).getBytes()).length;
34:         int endPos = ((file.substring(0, boundaryLocation)).getBytes()).length;
35:         
36:     //  String pathToFile = this.getServletContext().getRealPath(request.getPathInfo());
37:         File ff = new File(this.getServletContext().getRealPath("/")+"videos/"+ saveFile);


Stacktrace:
    org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:524)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:417)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:803)


root cause 

javax.servlet.ServletException: java.lang.OutOfMemoryError: Java heap space
    org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:850)
    org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:779)
    org.apache.jsp.SaveVideos_jsp._jspService(SaveVideos_jsp.java:138)
    org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:393)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:803)


root cause 

java.lang.OutOfMemoryError: Java …

我是 Docker 和 MongoDb 的新手。我使用以下命令为 mongodb 创建了一个容器

sudo docker run -v /data:/data --name my-mongodb -p 4000:27017 --entrypoint=mongod mongo:2.6.6 

我在某个文件夹中有一个转储..我想恢复数据..我尝试了不同的方法，比如

sudo docker run -it --link mongotest:db 802e18e53eec mongorestore -h db /path/dump

但是没有用。

它说 ：

Unable to find image '802e18e53eec:latest' locally
Pulling repository docker.io/library/802e18e53eec
docker: Error: image library/802e18e53eec:latest not found.
See 'docker run --help'.

这有什么帮助吗？

谢谢

我有一个listview图像和textview每行一个.我希望在点击整行时获得文本的值.下面的代码表现得很奇怪.我得到的是随机行的值,而不是点击的那一行.

我没有弄错.任何帮助,将不胜感激.

我这样做,:

public static class LazyAdapter extends BaseAdapter {

    private Activity activity;
    private ArrayList<HashMap<String, String>> data;
    private static LayoutInflater inflater=null;
    public ImageLoader imageLoader; 

    public LazyAdapter(Activity a, ArrayList<HashMap<String, String>> d) {
        activity = a;
        data=d;
        inflater = (LayoutInflater)activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        imageLoader=new ImageLoader(activity.getApplicationContext());
    }

    public int getCount() {
        return data.size();
    }

    public Object getItem(int position) {
        return position;
    }

    public long getItemId(int position) {
        return position;
    }

    public View getView(final int position, View convertView, ViewGroup parent) {
        View vi=convertView; …