src/org/nutz/lang/Streams.java
public static void writeAndClose(Writer writer, CharSequence cs) {
        try {
            write(writer, cs);
        }
        catch (IOException e) {
            throw Lang.wrapThrow(e);
        }
        finally {
            safeClose(writer);
        }
    }
public static void writeAndClose(Writer writer, CharSequence cs) {
        try {
            write(writer, cs);
        }
        catch (IOException e) {
            throw Lang.wrapThrow(e);
        }
        finally {
            safeClose(writer);
        }
    }
将一段文本全部写入一个writer。
<p>
<b style=color:red>注意</b>，它会关闭输出流

@param writer
输出流
@param cs
文本