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package org.mule.example.hello; |
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import org.mule.api.transformer.TransformerException; |
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import org.mule.transformer.AbstractTransformer; |
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import org.mule.util.IOUtils; |
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import java.io.InputStream; |
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import java.io.UnsupportedEncodingException; |
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import java.net.URLDecoder; |
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public class HttpRequestToNameString extends AbstractTransformer |
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{ |
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private static final String NAME_REQUEST_PARAMETER = "name="; |
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public HttpRequestToNameString() |
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{ |
27 | 4 | super(); |
28 | 4 | this.registerSourceType(String.class); |
29 | 4 | this.registerSourceType(byte[].class); |
30 | 4 | this.registerSourceType(InputStream.class); |
31 | 4 | this.setReturnClass(NameString.class); |
32 | 4 | } |
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|
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public Object doTransform(Object src, String encoding) throws TransformerException |
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{ |
36 | 6 | return new NameString(extractNameValue(extractRequestQuery(convertRequestToString(src, encoding)))); |
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} |
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private String convertRequestToString(Object src, String encoding) |
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{ |
41 | 6 | String srcAsString = null; |
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|
43 | 6 | if (src instanceof byte[]) |
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{ |
45 | 0 | if (encoding != null) |
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{ |
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try |
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{ |
49 | 0 | srcAsString = new String((byte[])src, encoding); |
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} |
51 | 0 | catch (UnsupportedEncodingException ex) |
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{ |
53 | 0 | srcAsString = new String((byte[])src); |
54 | 0 | } |
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} |
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else |
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{ |
58 | 0 | srcAsString = new String((byte[])src); |
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} |
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} |
61 | 6 | else if (src instanceof InputStream) |
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{ |
63 | 2 | InputStream input = (InputStream) src; |
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try |
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{ |
66 | 2 | srcAsString = IOUtils.toString(input); |
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} |
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finally |
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{ |
70 | 2 | IOUtils.closeQuietly(input); |
71 | 2 | } |
72 | 2 | } |
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else |
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{ |
75 | 4 | srcAsString = src.toString(); |
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} |
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78 | 6 | return srcAsString; |
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} |
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private String extractRequestQuery(String request) |
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{ |
83 | 6 | String requestQuery = null; |
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85 | 6 | if (request != null && request.length() > 0 && request.indexOf('?') != -1) |
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{ |
87 | 6 | requestQuery = request.substring(request.indexOf('?') + 1).trim(); |
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} |
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90 | 6 | return requestQuery; |
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} |
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private String extractNameValue(String requestQuery) throws TransformerException |
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{ |
95 | 6 | String nameValue = null; |
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|
97 | 6 | if (requestQuery != null && requestQuery.length() > 0) |
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{ |
99 | 6 | int nameParameterPos = requestQuery.indexOf(NAME_REQUEST_PARAMETER); |
100 | 6 | if (nameParameterPos != -1) |
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{ |
102 | 6 | int nextParameterValuePos = requestQuery.indexOf('&'); |
103 | 6 | if (nextParameterValuePos == -1 || nextParameterValuePos < nameParameterPos) |
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{ |
105 | 6 | nextParameterValuePos = requestQuery.length(); |
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} |
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108 | 6 | nameValue = requestQuery.substring(nameParameterPos + NAME_REQUEST_PARAMETER.length(), nextParameterValuePos); |
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} |
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111 | 6 | if (nameValue != null && nameValue.length() > 0) |
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{ |
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try |
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{ |
115 | 6 | nameValue = URLDecoder.decode(nameValue, "UTF-8"); |
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} |
117 | 0 | catch (UnsupportedEncodingException uee) |
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{ |
119 | 0 | logger.error(uee.getMessage()); |
120 | 6 | } |
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} |
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} |
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124 | 6 | if (nameValue == null) |
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{ |
126 | 0 | nameValue = ""; |
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} |
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129 | 6 | return nameValue; |
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} |
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} |