smooks数据转换:edi to java

• edi源文件内容：
  
  HDR*1*0*59.97*64.92*4.95*Wed Nov 15 13:45:28 EST 2006
  CUS*user1*Harry^Fletcher*SD
  ORD*1*1*364*The 40-Year-Old Virgin*29.98
  ORD*2*1*299*Pulp Fiction*29.99
• edi-to-java-mapping文件内容:
  
  <?xml version="1.0" encoding="UTF-8"?>
  <medi:edimap xmlns:medi="http://www.milyn.org/schema/edi-message-mapping-1.0.xsd">
  <medi:description name="DVD Order" version="1.0" />
  <medi:delimiters segment="&#10;" field="*" component="^" sub-component="~" />
  
  
  <medi:segments xmltag="Order">
  <medi:segment segcode="HDR" xmltag="header">
  <medi:field xmltag="order-id" />
  <medi:field xmltag="status-code" />
  <medi:field xmltag="net-amount" />
  <medi:field xmltag="total-amount" />
  <medi:field xmltag="tax" />
  <medi:field xmltag="date" />
  </medi:segment>
  <medi:segment segcode="CUS" xmltag="customer-details">
  <medi:field xmltag="username" />
  <medi:field xmltag="name">
  <medi:component xmltag="firstname" />
  <medi:component xmltag="lastname" />
  </medi:field>
  <medi:field xmltag="state" />
  </medi:segment>
  <medi:segment segcode="ORD" xmltag="order-item" maxOccurs="-1">
  <medi:field xmltag="position" />
  <medi:field xmltag="quantity" />
  <medi:field xmltag="product-id" />
  <medi:field xmltag="title" />
  <medi:field xmltag="price" />
  </medi:segment>
  </medi:segments>
  
  </medi:edimap>
• 建立java project ，import edi源文件及mapping文件，根据以上文件可建立java class分别为：Coustomer,Header,Order,OrderItem.在smooks的example文件里有源码。导入文件在src文件夹下，创建smooks文件，点击input task——>add——>browse workspace——>edi源文件——>确定。添加映射关系文件，mapping model处选择browse——>导入在project下的mapping xml文件。
• 右击input mask——>add tasking——>java mapping,在selected task details区右击——>add——>java class,依次添加相应的class并建立关系。如图所示：
• 测试并转换，建立main class。（在测试之前需将smooks/lib下所以的jar包导入，方法：右击project——>build path——>add axternal archives……——>……,导入完毕。）main源码如下：
  
  import org.milyn.*;
  import org.milyn.payload.JavaResult;
  import org.milyn.container.*;
  import org.milyn.event.report.*;
  import org.milyn.io.*;
  import org.xml.sax.*;
  
  
  import javax.xml.transform.stream.*;
  import java.io.*;
  import java.util.*;
  
  
  public class Main {
  
  
      private static byte[] messageIn = readInputMessage();
  
  
      private final Smooks smooks;
  
  
      protected Main() throws IOException, SAXException {
          // Instantiate Smooks with the config...
          smooks = new Smooks("smooks-config.xml");
      }
  
  
      protected JavaResult runSmooksTransform(ExecutionContext executionContext) throws IOException, SAXException, SmooksException {
      try {
              Locale defaultLocale = Locale.getDefault();
              Locale.setDefault(new Locale("en", "IE"));
  
  
              org.milyn.payload.JavaResult javaResult = new org.milyn.payload.JavaResult();
  
  
              // Configure the execution context to generate a report...
              executionContext.setEventListener(new HtmlReportGenerator("target/report/report.html"));
  
  
              // Filter the input message to the outputWriter, using the execution context...
              smooks.filterSource(executionContext, new StreamSource(new ByteArrayInputStream(messageIn)), javaResult);
  
  
              Locale.setDefault(defaultLocale);
  
  
              return javaResult;
          } finally {
              smooks.close();
          }
      }
  
  
      public static void main(String[] args) throws IOException, SAXException, SmooksException {
          System.out.println("\n\n==============Message In==============");
          System.out.println(new String(messageIn));
          System.out.println("======================================\n");
  
  
          pause("The EDI input stream can be seen above.  Press 'enter' to see how this stream is transformed the Order Object graph...");
  
  
          Main smooksMain = new Main();
          ExecutionContext executionContext = smooksMain.smooks.createExecutionContext();
          org.milyn.payload.JavaResult result = smooksMain.runSmooksTransform(executionContext);
  
  
  
  
          System.out.println("\n==============EDI as Java Object Graph=============");
          System.out.println(result.getBean("order"));
          System.out.println("======================================\n\n");
  
  
          pause("And that's it!  Press 'enter' to finish...");
      }
  
  
      private static byte[] readInputMessage() {
          try {
              return StreamUtils.readStream(new FileInputStream("src/input-message.edi"));
          } catch (IOException e) {
              e.printStackTrace();
              return "<no-message/>".getBytes();
          }
      }
  
  
      private static void pause(String message) {
          try {
              BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
              System.out.print("> " + message);
              in.readLine();
          } catch (IOException e) {
          }
          System.out.println("\n");
      }
  
  
      public org.milyn.payload.JavaResult runSmooksTransform() throws IOException, SAXException {
          ExecutionContext executionContext = smooks.createExecutionContext();
          return runSmooksTransform(executionContext);
      }
  }
• 运行main class，成功后在/target、文件夹下可查看生产的xml内容验证文件，看是否是达到预期效果。
• edi to java数据转换成功。