Java IoUtil.closeSilently方法代码示例

import org.activiti.engine.impl.util.IoUtil; //导入方法依赖的package包/类
public byte[] serialize(Object value, ValueFields valueFields) {
    if (value == null) {
        return null;
    }
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    ObjectOutputStream oos = null;
    try {
        oos = createObjectOutputStream(baos);
        oos.writeObject(value);
    } catch (Exception e) {
        throw new ActivitiException("Couldn't serialize value '" + value + "' in variable '" + valueFields.getName() + "'", e);
    } finally {
        IoUtil.closeSilently(oos);
    }
    return baos.toByteArray();
}
 

import org.activiti.engine.impl.util.IoUtil; //导入方法依赖的package包/类
/**
 * Generates an image of what currently is drawn on the canvas.
 * <p/>
 * Throws an {@link ActivitiException} when {@link #close()} is already
 * called.
 */
public InputStream generateImage(String imageType) {
    if (closed) {
        throw new ActivitiException("ProcessDiagramGenerator already closed");
    }

    ByteArrayOutputStream out = new ByteArrayOutputStream();
    try {
        // Try to remove white space
        minX = (minX <= 5) ? 5 : minX;
        minY = (minY <= 5) ? 5 : minY;
        BufferedImage imageToSerialize = processDiagram;
        if (minX >= 0 && minY >= 0) {
            imageToSerialize = processDiagram.getSubimage(minX - 5, minY - 5, canvasWidth - minX + 5, canvasHeight - minY + 5);
        }
        ImageIO.write(imageToSerialize, imageType, out);
    } catch (IOException e) {
        throw new ActivitiException("Error while generating process image", e);
    } finally {
        IoUtil.closeSilently(out);
    }
    return new ByteArrayInputStream(out.toByteArray());
}
 

import org.activiti.engine.impl.util.IoUtil; //导入方法依赖的package包/类
/**
 * Generates an image of what currently is drawn on the canvas.
 * 
 * Throws an {@link ActivitiException} when {@link #close()} is already
 * called.
 */
public InputStream generateImage(String imageType) {
  if (closed) {
    throw new ActivitiException("ProcessDiagramGenerator already closed");
  }

  ByteArrayOutputStream out = new ByteArrayOutputStream();
  try {
    // Try to remove white space
    minX = (minX <= 5) ? 5 : minX;
    minY = (minY <= 5) ? 5 : minY;
    BufferedImage imageToSerialize = processDiagram;
    if (minX >= 0 && minY >= 0) {
      imageToSerialize = processDiagram.getSubimage(minX - 5, minY - 5, canvasWidth - minX + 5, canvasHeight - minY + 5);
    }
    ImageIO.write(imageToSerialize, imageType, out);
  } catch (IOException e) {
    throw new ActivitiException("Error while generating process image", e);
  } finally {
    IoUtil.closeSilently(out);
  }
  return new ByteArrayInputStream(out.toByteArray());
}
 

import org.activiti.engine.impl.util.IoUtil; //导入方法依赖的package包/类
public static byte[] serialize(Object value, ValueFields valueFields) {
  if(value == null) {
    return null;
  }
  ByteArrayOutputStream baos = new ByteArrayOutputStream();
  ObjectOutputStream ois = null;
  try {
    ois = new ObjectOutputStream(baos);
    ois.writeObject(value);
  } catch (Exception e) {
    throw new ActivitiException("coudn't deserialize value '"+value+"' in variable '"+valueFields.getName()+"'", e);
  } finally {
    IoUtil.closeSilently(ois);
  }
  return baos.toByteArray();
}
 

import org.activiti.engine.impl.util.IoUtil; //导入方法依赖的package包/类
public void executeSchemaResource(String operation, String component, String resourceName, boolean isOptional) {
  InputStream inputStream = null;
  try {
    inputStream = ReflectUtil.getResourceAsStream(resourceName);
    if (inputStream == null) {
      if (isOptional) {
        log.fine("no schema resource "+resourceName+" for "+operation);
      } else {
        throw new ActivitiException("resource '" + resourceName + "' is not available");
      }
    } else {
      executeSchemaResource(operation, component, resourceName, inputStream);
    }

  } finally {
    IoUtil.closeSilently(inputStream);
  }
}
 

import org.activiti.engine.impl.util.IoUtil; //导入方法依赖的package包/类
public static byte[] serialize(Object value, ValueFields valueFields) {
  if (value == null) {
    return null;
  }
  ByteArrayOutputStream baos = new ByteArrayOutputStream();
  ObjectOutputStream oos = null;
  try {
    oos = createObjectOutputStream(baos);
    oos.writeObject(value);
  } catch (Exception e) {
    throw new ActivitiException("Couldn't serialize value '"+value+"' in variable '"+valueFields.getName()+"'", e);
  } finally {
    IoUtil.closeSilently(oos);
  }
  return baos.toByteArray();
}
 

import org.activiti.engine.impl.util.IoUtil; //导入方法依赖的package包/类
public void executeSchemaResource(String operation, String component, String resourceName, boolean isOptional) {
  InputStream inputStream = null;
  try {
    inputStream = ReflectUtil.getResourceAsStream(resourceName);
    if (inputStream == null) {
      if (isOptional) {
        log.debug("no schema resource {} for {}", resourceName, operation);
      } else {
        throw new ActivitiException("resource '" + resourceName + "' is not available");
      }
    } else {
      executeSchemaResource(operation, component, resourceName, inputStream);
    }

  } finally {
    IoUtil.closeSilently(inputStream);
  }
}
 

import org.activiti.engine.impl.util.IoUtil; //导入方法依赖的package包/类
public Object deserialize(byte[] bytes, ValueFields valueFields) {
    ByteArrayInputStream bais = new ByteArrayInputStream(bytes);
    try {
        ObjectInputStream ois = createObjectInputStream(bais);
        Object deserializedObject = ois.readObject();

        return deserializedObject;
    } catch (Exception e) {
        throw new ActivitiException("Couldn't deserialize object in variable '" + valueFields.getName() + "'", e);
    } finally {
        IoUtil.closeSilently(bais);
    }
}
 

import org.activiti.engine.impl.util.IoUtil; //导入方法依赖的package包/类
private static ProcessEngine buildProcessEngine(URL resource) {
    InputStream inputStream = null;
    try {
        inputStream = resource.openStream();
        ProcessEngineConfiguration processEngineConfiguration = ProcessEngineConfiguration.createProcessEngineConfigurationFromInputStream(inputStream);
        return processEngineConfiguration.buildProcessEngine();

    } catch (IOException e) {
        throw new ActivitiIllegalArgumentException("couldn't open resource stream: " + e.getMessage(), e);
    } finally {
        IoUtil.closeSilently(inputStream);
    }
}
 

import org.activiti.engine.impl.util.IoUtil; //导入方法依赖的package包/类
private static  ProcessEngine buildProcessEngine(URL resource) {
  InputStream inputStream = null;
  try {
    inputStream = resource.openStream();
    ProcessEngineConfiguration processEngineConfiguration = ProcessEngineConfiguration.createProcessEngineConfigurationFromInputStream(inputStream);
    return processEngineConfiguration.buildProcessEngine();
    
  } catch (IOException e) {
    throw new ActivitiException("couldn't open resource stream: "+e.getMessage(), e);
  } finally {
    IoUtil.closeSilently(inputStream);
  }
}
 

import org.activiti.engine.impl.util.IoUtil; //导入方法依赖的package包/类
public void run() {
  task.log("launching cmd '"+cmdString(cmd)+"' in dir '"+dir+"'");
  if (msg!=null) {
    task.log("waiting for launch completion msg '"+msg+"'...");
  } else {
    task.log("not waiting for a launch completion msg.");
  }
  ProcessBuilder processBuilder = new ProcessBuilder(cmd)
    .redirectErrorStream(true)
    .directory(dir);
  
  InputStream consoleStream = null;
  try {
    Process process = processBuilder.start();
    
    consoleStream = process.getInputStream();
    BufferedReader consoleReader = new BufferedReader(new InputStreamReader(consoleStream));
    String consoleLine = "";
    while ( (consoleLine!=null)
            && (msg==null || consoleLine.indexOf(msg)==-1)
          ) {
      consoleLine = consoleReader.readLine();
      
      if (consoleLine!=null) {
        task.log("  " + consoleLine);
      } else {
        task.log("launched process completed");
      }
    }
  } catch (Exception e) {
    throw new BuildException("couldn't launch "+cmdString(cmd), e);
  } finally {
    IoUtil.closeSilently(consoleStream);
  }
}
 

import org.activiti.engine.impl.util.IoUtil; //导入方法依赖的package包/类
public Object getValue(ValueFields valueFields) {
  Object cachedObject = valueFields.getCachedValue();
  if (cachedObject!=null) {
    return cachedObject;
  }
  byte[] bytes = (byte[]) super.getValue(valueFields);
  ByteArrayInputStream bais = new ByteArrayInputStream(bytes);
  Object deserializedObject;
  try {
    ObjectInputStream ois = new ObjectInputStream(bais);
    deserializedObject = ois.readObject();
    valueFields.setCachedValue(deserializedObject);
    
    if (valueFields instanceof VariableInstanceEntity) {
      Context
        .getCommandContext()
        .getDbSqlSession()
        .addDeserializedObject(deserializedObject, bytes, (VariableInstanceEntity) valueFields);
    }
    
  } catch (Exception e) {
    throw new ActivitiException("coudn't deserialize object in variable '"+valueFields.getName()+"'", e);
  } finally {
    IoUtil.closeSilently(bais);
  }
  return deserializedObject;
}
 

import org.activiti.engine.impl.util.IoUtil; //导入方法依赖的package包/类
public Object getValue(ValueFields valueFields) {
  Object cachedObject = valueFields.getCachedValue();
  if (cachedObject != null) {
    return cachedObject;
  }
  
  byte[] bytes = (byte[]) super.getValue(valueFields);
  ByteArrayInputStream bais = new ByteArrayInputStream(bytes);
  try {
    ObjectInputStream ois = createObjectInputStream(bais);
    Object deserializedObject = ois.readObject();
    valueFields.setCachedValue(deserializedObject);
    
    if (valueFields instanceof VariableInstanceEntity) {
      // we need to register the deserialized object for dirty checking, 
      // so that it can be serialized again if it was changed. 
      Context.getCommandContext()
        .getDbSqlSession()
        .addDeserializedObject(deserializedObject, bytes, (VariableInstanceEntity) valueFields);
    }
    
    return deserializedObject;
  } catch (Exception e) {
    throw new ActivitiException("Couldn't deserialize object in variable '"+valueFields.getName()+"'", e);
  } finally {
    IoUtil.closeSilently(bais);
  }
}
 

import org.activiti.engine.impl.util.IoUtil; //导入方法依赖的package包/类
private static  ProcessEngine buildProcessEngine(URL resource) {
  InputStream inputStream = null;
  try {
    inputStream = resource.openStream();
    ProcessEngineConfiguration processEngineConfiguration = ProcessEngineConfiguration.createProcessEngineConfigurationFromInputStream(inputStream);
    return processEngineConfiguration.buildProcessEngine();
    
  } catch (IOException e) {
    throw new ActivitiIllegalArgumentException("couldn't open resource stream: "+e.getMessage(), e);
  } finally {
    IoUtil.closeSilently(inputStream);
  }
}