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Revision 48

Added by Matt Jones over 24 years ago

continued work on interface to servlet

View differences:

src/edu/ucsb/nceas/metacat/MetaCatServlet.java
6 6 
import javax.servlet.ServletConfig;
7 7 
import javax.servlet.ServletContext;
8 8 
import javax.servlet.ServletException;
9 
import javax.servlet.ServletInputStream;
9 10 
import javax.servlet.http.HttpServlet;
10 11 
import javax.servlet.http.HttpServletRequest;
11 12 
import javax.servlet.http.HttpServletResponse;
......
41 42 
  public void doGet (HttpServletRequest request, HttpServletResponse response)
42 43 
    throws ServletException, IOException {
43 44 

  		




  44
  
  
    
    PrintWriter out;


  		




  45
  
  
    

  		




  46
  45
  
    
    // Get the parameters from the form


  		




  47
  46
  
    
    String querystring = request.getQueryString();


  		




  48
  47
  
    
    Hashtable params = HttpUtils.parseQueryString(querystring);


  		




  49
  
  
    
    String[] query = (String[])params.get("query"); 


  		




  50
  48
  
    

  		




  
  49
  
    
    // Process the data and send back the response


  		




  
  50
  
    
    handleGetOrPost(response, params);


  		




  
  51
  
    
  }


  		




  
  52
  
    

  		




  
  53
  
    
  public void doPost( HttpServletRequest request, HttpServletResponse response)


  		




  
  54
  
    
    throws ServletException, IOException {


  		




  
  55
  
    

  		




  
  56
  
    
    // Get the input data from the client


  		




  
  57
  
    
    ServletInputStream in = request.getInputStream();


  		




  
  58
  
    
    int len = request.getContentLength();


  		




  
  59
  
    

  		




  
  60
  
    
    // Parse the input data into a Hashtable


  		




  
  61
  
    
    Hashtable params = HttpUtils.parsePostData(len, in);


  		




  
  62
  
    

  		




  
  63
  
    
    // Process the data and send back the response


  		




  
  64
  
    
    handleGetOrPost(response, params);


  		




  
  65
  
    
  }


  		




  
  66
  
    

  		




  
  67
  
    
  private void handleGetOrPost(HttpServletResponse response, Hashtable params) 


  		




  
  68
  
    
    throws ServletException, IOException {


  		




  
  69
  
    

  		




  51
  70
  
    
    // Run the query


  		




  
  71
  
    
    String[] query = (String[])params.get("query"); 


  		




  52
  72
  
    
    Hashtable nodelist = queryobj.findRootNodes(query[0]);


  		




  53
  73
  
    

  		




  54
  74
  
    
    // set content type and other response header fields first


  		




  55
  75
  
    
    response.setContentType("text/xml");


  		




  56
  76
  
    

  		




  57
  77
  
    
    // then write the data of the response


  		




  58
  
  
    
    out = response.getWriter();


  		




  
  78
  
    
    PrintWriter out = response.getWriter();


  		




  59
  79
  
    

  		




  60
  80
  
    
    // Print the reulting root nodes


  		




  61
  81
  
    
    long nodeid;


  		




  ......




  71
  91
  
    

  		




  72
  92
  
    
    out.close();


  		




  73
  93
  
    
  }


  		




  74
  
  
    

  		




  75
  
  
    
  public void doPost( HttpServletRequest request, HttpServletResponse response)


  		




  76
  
  
    
    throws ServletException, IOException {


  		




  77
  
  
    

  		




  78
  
  
    
    PrintWriter out;


  		




  79
  
  
    
    // set content type and other response header fields first


  		




  80
  
  
    
    response.setContentType("text/html");


  		




  81
  
  
    

  		




  82
  
  
    
    // then write the data of the response


  		




  83
  
  
    
    out = response.getWriter();


  		




  84
  
  
    
    out.println("POST detected");


  		




  85
  
  
    
    out.close();


  		




  86
  
  
    
  }


  		




  87
  
  
    

  		




  88
  94
  
    
}


  		












  

    
      contents.html
    
  





  20
  20
  
    
<b>MetaCat Query</b>


  		




  21
  21
  
    
<p>


  		




  22
  22
  
    
Simple database query against MetaCat<br>


  		




  23
  
  
    
<form action="servlets/MetaCatServlet" target="right" method="GET">


  		




  
  23
  
    
<form action="/servlets/MetaCatServlet" target="right" method="POST">


  		




  24
  24
  
    
  <input type="text" name="query" size="15">


  		




  25
  25
  
    
  <input type="submit" value="Run query">


  		




  
  26
  
    
  <br />


  		




  
  27
  
    
  <input type="checkbox" name="convert" value="true">Results in HTML


  		




  26
  28
  
    
</form>


  		




  27
  29
  
    
<p>


  		




  28
  30
  
    
</body>


  		












  

    
      MetaCatServlet.java
    
  





  6
  6
  
    
import javax.servlet.ServletConfig;


  		




  7
  7
  
    
import javax.servlet.ServletContext;


  		




  8
  8
  
    
import javax.servlet.ServletException;


  		




  
  9
  
    
import javax.servlet.ServletInputStream;


  		




  9
  10
  
    
import javax.servlet.http.HttpServlet;


  		




  10
  11
  
    
import javax.servlet.http.HttpServletRequest;


  		




  11
  12
  
    
import javax.servlet.http.HttpServletResponse;


  		




  ......




  41
  42
  
    
  public void doGet (HttpServletRequest request, HttpServletResponse response)


  		




  42
  43
  
    
    throws ServletException, IOException {


  		




  43
  44
  
    

  		




  44
  
  
    
    PrintWriter out;


  		




  45
  
  
    

  		




  46
  45
  
    
    // Get the parameters from the form


  		




  47
  46
  
    
    String querystring = request.getQueryString();


  		




  48
  47
  
    
    Hashtable params = HttpUtils.parseQueryString(querystring);


  		




  49
  
  
    
    String[] query = (String[])params.get("query"); 


  		




  50
  48
  
    

  		




  
  49
  
    
    // Process the data and send back the response


  		




  
  50
  
    
    handleGetOrPost(response, params);


  		




  
  51
  
    
  }


  		




  
  52
  
    

  		




  
  53
  
    
  public void doPost( HttpServletRequest request, HttpServletResponse response)


  		




  
  54
  
    
    throws ServletException, IOException {


  		




  
  55
  
    

  		




  
  56
  
    
    // Get the input data from the client


  		




  
  57
  
    
    ServletInputStream in = request.getInputStream();


  		




  
  58
  
    
    int len = request.getContentLength();


  		




  
  59
  
    

  		




  
  60
  
    
    // Parse the input data into a Hashtable


  		




  
  61
  
    
    Hashtable params = HttpUtils.parsePostData(len, in);


  		




  
  62
  
    

  		




  
  63
  
    
    // Process the data and send back the response


  		




  
  64
  
    
    handleGetOrPost(response, params);


  		




  
  65
  
    
  }


  		




  
  66
  
    

  		




  
  67
  
    
  private void handleGetOrPost(HttpServletResponse response, Hashtable params) 


  		




  
  68
  
    
    throws ServletException, IOException {


  		




  
  69
  
    

  		




  51
  70
  
    
    // Run the query


  		




  
  71
  
    
    String[] query = (String[])params.get("query"); 


  		




  52
  72
  
    
    Hashtable nodelist = queryobj.findRootNodes(query[0]);


  		




  53
  73
  
    

  		




  54
  74
  
    
    // set content type and other response header fields first


  		




  55
  75
  
    
    response.setContentType("text/xml");


  		




  56
  76
  
    

  		




  57
  77
  
    
    // then write the data of the response


  		




  58
  
  
    
    out = response.getWriter();


  		




  
  78
  
    
    PrintWriter out = response.getWriter();


  		




  59
  79
  
    

  		




  60
  80
  
    
    // Print the reulting root nodes


  		




  61
  81
  
    
    long nodeid;


  		




  ......




  71
  91
  
    

  		




  72
  92
  
    
    out.close();


  		




  73
  93
  
    
  }


  		




  74
  
  
    

  		




  75
  
  
    
  public void doPost( HttpServletRequest request, HttpServletResponse response)


  		




  76
  
  
    
    throws ServletException, IOException {


  		




  77
  
  
    

  		




  78
  
  
    
    PrintWriter out;


  		




  79
  
  
    
    // set content type and other response header fields first


  		




  80
  
  
    
    response.setContentType("text/html");


  		




  81
  
  
    

  		




  82
  
  
    
    // then write the data of the response


  		




  83
  
  
    
    out = response.getWriter();


  		




  84
  
  
    
    out.println("POST detected");


  		




  85
  
  
    
    out.close();


  		




  86
  
  
    
  }


  		




  87
  
  
    

  		




  88
  94
  
    
}


  		












  

    
      lib/contents.html
    
  





  20
  20
  
    
<b>MetaCat Query</b>


  		




  21
  21
  
    
<p>


  		




  22
  22
  
    
Simple database query against MetaCat<br>


  		




  23
  
  
    
<form action="servlets/MetaCatServlet" target="right" method="GET">


  		




  
  23
  
    
<form action="/servlets/MetaCatServlet" target="right" method="POST">


  		




  24
  24
  
    
  <input type="text" name="query" size="15">


  		




  25
  25
  
    
  <input type="submit" value="Run query">


  		




  
  26
  
    
  <br />


  		




  
  27
  
    
  <input type="checkbox" name="convert" value="true">Results in HTML


  		




  26
  28
  
    
</form>


  		




  27
  29
  
    
<p>


  		




  28
  30
  
    
</body>


  		












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