java - 关闭StreamSource

Question

我的网络服务上出现打开文件过多错误，只是想确保没有其他需要关闭的内容。我在 outWriter (StringWriter) 上添加了 close()，但 JavaDoc 说这没有效果。 getCachedExtractSoapBodyXslt() 获取 javax.xml.transform.Transformer 对象。

String payload;
StreamResult result=null;
StringWriter outWriter=null;
try {
    // Programmatically extract the SOAP Body from message
    outWriter = new StringWriter();
    result = new StreamResult(outWriter);
    Source src = new StreamSource(new java.io.StringReader(doc));
    getCachedExtractSoapBodyXslt().transform(src, result);
    StringBuffer sb = outWriter.getBuffer();
    payload = sb.toString();
} catch (TransformerException e) {
    throw new ComponentException("Unable to extract SOAP Body");
}
finally {
    LOG.debug("Closing XSLT transformer output stream");
    try {
        outWriter.close();
    }
    catch (IOException e) {
        LOG.error("Failed to close stream for SOAP message");
    }
}

Answer 1

我必须将其移至它自己的变量并关闭它

new java.io.StringReader(doc)