exportSprite之八（Util）-优快云博客

本文介绍了一个名为Util的Java工具类，该类提供了多种用于数据读写的方法，包括按不同格式写入整数和短整型数据，以及字符串处理和输入输出流的关闭等功能。

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Util.java文件源码：<wbr style="line-height:25px"><div style="line-height:25px"> <div style="line-height:25px">import java.io.*;</div> <div style="line-height:25px"><br style="line-height:25px"></div> <div style="line-height:25px"><span style="color:#993300; line-height:25px">public class Util</span></div> <div style="line-height:25px">{</div> <div style="line-height:25px"> final static int kHeightForwardFormatWrite=0;</div> <div style="line-height:25px"> final static int kHeightBackwardFormatWrite=1;</div> <div style="line-height:25px"> final static int kCFormatWrite=kHeightBackwardFormatWrite;</div> <div style="line-height:25px"> final static int kJavaFormatWrite=kHeightForwardFormatWrite; </div> <div style="line-height:25px"> static int dataWriteFormat=kCFormatWrite;</div> <div style="line-height:25px"> <span style="color:#FF6600; line-height:25px">static void setDataWriteFormat(int format)</span> </div> <div style="line-height:25px"> {</div> <div style="line-height:25px"> dataWriteFormat=format;</div> <div style="line-height:25px"> }</div> <div style="line-height:25px"> <span style="color:#FF6600; line-height:25px">static String trimSemicolon(String str)</span> </div> <div style="line-height:25px"> {</div> <div style="line-height:25px"> str = str.replaceAll("\"", "");</div> <div style="line-height:25px"> str = str.replaceAll("\"", "");</div> <div style="line-height:25px"> return str;</div> <div style="line-height:25px"> }</div> <div style="line-height:25px"><br style="line-height:25px"></div> <div style="line-height:25px"> <span style="color:#FF6600; line-height:25px">static int readInt2(DataInputStream in)</span> </div> <div style="line-height:25px"> throws IOException</div> <div style="line-height:25px"> {</div> <div style="line-height:25px"> int ch1 = in.read();</div> <div style="line-height:25px"> int ch2 = in.read();</div> <div style="line-height:25px"> int ch3 = in.read();</div> <div style="line-height:25px"> int ch4 = in.read();</div> <div style="line-height:25px"> if ((ch1 | ch2 | ch3 | ch4) < 0)</div> <div style="line-height:25px"> {</div> <div style="line-height:25px"> throw new EOFException();</div> <div style="line-height:25px"> }</div> <div style="line-height:25px"> return ((ch4 << 24) + (ch3 << 16) + (ch2 << 8) + (ch1 << 0));</div> <div style="line-height:25px"> }</div> <div style="line-height:25px"> <span style="color:#FF6600; line-height:25px">public static void writeInt(DataOutputStream os, int value)</span> </div> <div style="line-height:25px"> throws IOException</div> <div style="line-height:25px"> {</div> <div style="line-height:25px"> if(dataWriteFormat==kCFormatWrite)</div> <div style="line-height:25px"> {</div> <div style="line-height:25px"> writeInt2(os,value);</div> <div style="line-height:25px"> }</div> <div style="line-height:25px"> else</div> <div style="line-height:25px"> {</div> <div style="line-height:25px"> os.writeInt(value);</div> <div style="line-height:25px"> }</div> <div style="line-height:25px"> }</div> <div style="line-height:25px"> <span style="color:#FF6600; line-height:25px">private static void writeInt2(DataOutputStream os, int value)</span> </div> <div style="line-height:25px"> throws IOException</div> <div style="line-height:25px"> {</div> <div style="line-height:25px"> int ch1 = (value >> 24) & 0xFF;</div> <div style="line-height:25px"> int ch2 = (value >> 16) & 0xFF;</div> <div style="line-height:25px"> int ch3 = (value >> 8) & 0xFF;</div> <div style="line-height:25px"> int ch4 = value & 0xFF;</div> <div style="line-height:25px"> os.writeByte(ch4);</div> <div style="line-height:25px"> os.writeByte(ch3);</div> <div style="line-height:25px"> os.writeByte(ch2);</div> <div style="line-height:25px"> os.writeByte(ch1);</div> <div style="line-height:25px"> }</div> <div style="line-height:25px"><br style="line-height:25px"></div> <div style="line-height:25px"> <span style="color:#FF6600; line-height:25px">static short readShort2(DataInputStream in)</span> </div> <div style="line-height:25px"> throws IOException</div> <div style="line-height:25px"> {</div> <div style="line-height:25px"> int ch1 = in.read();</div> <div style="line-height:25px"> int ch2 = in.read();</div> <div style="line-height:25px"> if ((ch1 | ch2) < 0)</div> <div style="line-height:25px"> {</div> <div style="line-height:25px"> throw new EOFException();</div> <div style="line-height:25px"> }</div> <div style="line-height:25px"> return (short) ((ch2 << 8) + (ch1 << 0));</div> <div style="line-height:25px"> }</div> <div style="line-height:25px"> <span style="color:#FF6600; line-height:25px">public static void writeShort(DataOutputStream os, int value)</span> </div> <div style="line-height:25px"> throws IOException</div> <div style="line-height:25px"> {</div> <div style="line-height:25px"> if(dataWriteFormat==kCFormatWrite)</div> <div style="line-height:25px"> {</div> <div style="line-height:25px"> writeShort2(os,value);</div> <div style="line-height:25px"> }</div> <div style="line-height:25px"> else</div> <div style="line-height:25px"> {</div> <div style="line-height:25px"> os.writeShort(value);</div> <div style="line-height:25px"> }</div> <div style="line-height:25px"> }</div> <div style="line-height:25px"> <span style="color:#FF6600; line-height:25px">private static void writeShort2(DataOutputStream os, int value)</span> </div> <div style="line-height:25px"> throws IOException</div> <div style="line-height:25px"> {</div> <div style="line-height:25px"> int ch1 = (value >> 8) & 0xFF;</div> <div style="line-height:25px"> int ch2 = value & 0xFF;</div> <div style="line-height:25px"> os.writeByte(ch2);</div> <div style="line-height:25px"> os.writeByte(ch1);</div> <div style="line-height:25px"> }</div> <div style="line-height:25px"><br style="line-height:25px"></div> <div style="line-height:25px"> <span style="color:#FF6600; line-height:25px">static void closeInputStream(DataInputStream in)</span> </div> <div style="line-height:25px"> {</div> <div style="line-height:25px"> try</div> <div style="line-height:25px"> {</div> <div style="line-height:25px"> if (in != null)</div> <div style="line-height:25px"> {</div> <div style="line-height:25px"> in.close();</div> <div style="line-height:25px"> }</div> <div style="line-height:25px"> } catch (IOException e)</div> <div style="line-height:25px"> {</div> <div style="line-height:25px"> e.printStackTrace();</div> <div style="line-height:25px"> }</div> <div style="line-height:25px"> }</div> <div style="line-height:25px"><br style="line-height:25px"></div> <div style="line-height:25px"> <span style="color:#FF6600; line-height:25px">static void closeDataputStream(DataOutputStream out)</span> </div> <div style="line-height:25px"> {</div> <div style="line-height:25px"> try</div> <div style="line-height:25px"> {</div> <div style="line-height:25px"> if (out != null)</div> <div style="line-height:25px"> {</div> <div style="line-height:25px"> out.close();</div> <div style="line-height:25px"> }</div> <div style="line-height:25px"> } catch (IOException e)</div> <div style="line-height:25px"> {</div> <div style="line-height:25px"> e.printStackTrace();</div> <div style="line-height:25px"> }</div> <div style="line-height:25px"> }</div> <div style="line-height:25px">}</div> </div> </wbr>