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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.transformer.types.DataTypeFactory; |
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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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{ |
24 | 0 | super(); |
25 | 0 | this.registerSourceType(DataTypeFactory.STRING); |
26 | 0 | this.registerSourceType(DataTypeFactory.BYTE_ARRAY); |
27 | 0 | this.registerSourceType(DataTypeFactory.INPUT_STREAM); |
28 | 0 | this.setReturnDataType(DataTypeFactory.create(NameString.class)); |
29 | 0 | } |
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@Override |
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public Object doTransform(Object src, String encoding) throws TransformerException |
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{ |
34 | 0 | 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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{ |
39 | 0 | String srcAsString = null; |
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|
41 | 0 | if (src instanceof byte[]) |
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{ |
43 | 0 | if (encoding != null) |
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{ |
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try |
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{ |
47 | 0 | srcAsString = new String((byte[])src, encoding); |
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} |
49 | 0 | catch (UnsupportedEncodingException ex) |
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{ |
51 | 0 | srcAsString = new String((byte[])src); |
52 | 0 | } |
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} |
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else |
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{ |
56 | 0 | srcAsString = new String((byte[])src); |
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} |
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} |
59 | 0 | else if (src instanceof InputStream) |
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{ |
61 | 0 | InputStream input = (InputStream) src; |
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try |
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{ |
64 | 0 | srcAsString = IOUtils.toString(input); |
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} |
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finally |
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{ |
68 | 0 | IOUtils.closeQuietly(input); |
69 | 0 | } |
70 | 0 | } |
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else |
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{ |
73 | 0 | srcAsString = src.toString(); |
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} |
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76 | 0 | return srcAsString; |
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} |
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private String extractRequestQuery(String request) |
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{ |
81 | 0 | String requestQuery = null; |
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|
83 | 0 | if (request != null && request.length() > 0 && request.indexOf('?') != -1) |
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{ |
85 | 0 | requestQuery = request.substring(request.indexOf('?') + 1).trim(); |
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} |
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|
88 | 0 | return requestQuery; |
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} |
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private String extractNameValue(String requestQuery) throws TransformerException |
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{ |
93 | 0 | String nameValue = null; |
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|
95 | 0 | if (requestQuery != null && requestQuery.length() > 0) |
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{ |
97 | 0 | int nameParameterPos = requestQuery.indexOf(NAME_REQUEST_PARAMETER); |
98 | 0 | if (nameParameterPos != -1) |
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{ |
100 | 0 | int nextParameterValuePos = requestQuery.indexOf('&'); |
101 | 0 | if (nextParameterValuePos == -1 || nextParameterValuePos < nameParameterPos) |
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{ |
103 | 0 | nextParameterValuePos = requestQuery.length(); |
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} |
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106 | 0 | nameValue = requestQuery.substring(nameParameterPos + NAME_REQUEST_PARAMETER.length(), nextParameterValuePos); |
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} |
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109 | 0 | if (nameValue != null && nameValue.length() > 0) |
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{ |
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try |
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{ |
113 | 0 | nameValue = URLDecoder.decode(nameValue, "UTF-8"); |
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} |
115 | 0 | catch (UnsupportedEncodingException uee) |
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{ |
117 | 0 | logger.error(uee.getMessage()); |
118 | 0 | } |
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} |
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} |
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122 | 0 | if (nameValue == null) |
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{ |
124 | 0 | nameValue = ""; |
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} |
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127 | 0 | return nameValue; |
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} |
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} |