Stanford POS tagger在servlet中不起作用

Question

public static String tagger(String sample) throws IOException, ClassNotFoundException {

 // Initialize the tagger
 MaxentTagger tagger = new MaxentTagger("models/english-left3words-distsim.tagger");

 // The tagged string
 String tagged = tagger.tagString(sample);

 // Output the result
 return tagged;
 }

public static void main(String[] args){
    try {
        System.out.println(tagger("This is a sample."));
    } catch (ClassNotFoundException | IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
}

/**
 * @see HttpServlet#service(HttpServletRequest request, HttpServletResponse response)
 */
protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException  {
    PrintWriter out = response.getWriter(); 
    try {
        out.println(Tagger.tagger("This is a sample sentence."));
    } catch (ClassNotFoundException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

堆栈跟踪如下：

Answer 1

您需要确保您的类路径是正确的。

从更新后的文章来看，您的类路径上似乎没有正确的模型路径。不应该将.tagger文件直接添加到类路径中；添加包含tagger文件夹的目录。如果您的文件设置如下所示：

C:\mystuff
    tagger\
        english-left3words-distsim.tagger
        english-bidirectional-distsim.tagger

那么您应该将C:\mystuff目录放在您的类路径上。