Beetl1.2M1将模板的文本先以Byte形式输出，性能又大幅提高(更新）

Beetl1.2M1将模板的文本先以Byte方式输出，性能又大幅提高(更新）

beetl是一个语法类似javascript的模板语言，可以用于代码生成和Web开发，易用性和性能非常好，功能也很全，如下是在性能上最新优化成功

package ext;import java.util.*;import java.util.Map.Entry;import java.math.*;import java.io.*;import org.bee.tl.core.*;import org.bee.tl.core.io.*;import org.bee.tl.core.compile.*;/* /ext/master_template.html is generated by beetl on 2012-06-22 10:42:38 */public class master_template_html extends CompiledClass{ public void service(ByteWriter writer,Context ctx) throws IOException,BeeException{ ctx.set("__group",group); ctx.set("__this",template); CompileTemplateWriter out = new CompileTemplateWriter(writer,this); ctx.set("__pw",out); try{ out.write(__V0); ByteSupportTag includeFileTemplate_18_19 = (ByteSupportTag)this.getTag("includeFileTemplate"); includeFileTemplate_18_19.setParas(new Object[]{"/ext/child_template.html"}); includeFileTemplate_18_19.setContext(ctx.getNewContext()); if(includeFileTemplate_18_19.requriedInput()){ out= out.getTempWriter(); ctx.set("__pw",out); { out.write(__V1); } //还原输出流 includeFileTemplate_18_19.setByteInput(out.getTempByte()); out = out.getParent(); ctx.set("__pw",out); } out.write(includeFileTemplate_18_19.getOutputAsByte()); out.write(__V2); }catch(Exception ex){ throw getException(ex,lineMap); } out.flush(); } private static final byte[] __V1 = new byte[]{0x68,0x65,0x6c,0x6c,0x6f,0x2c,0x74,0x68,0x69,0x73,0x20,0x69,0x73,0x20,0x74,0x65,0x6d,0x70,0x20,0x63,0x68,0x69,0x6c,0x64,0xd,0xa}; private static final byte[] __V0 = new byte[]{0xffffffd5,0xffffffe2,0xffffffca,0xffffffc7,0x6d,0x61,0x73,0x74,0x65,0x72,0xffffffd2,0xffffffb3,0xffffffc3,0xffffffe6,0xd,0xa,0xffffffcf,0xffffffd6,0xffffffd4,0xffffffda,0xffffffcf,0xffffffd4,0xffffffca,0xffffffbe,0x63,0x68,0x69,0x6c,0x64,0xffffffd2,0xffffffb3,0xffffffc3,0xffffffe6,0xffffffd4,0xffffffda,0xffffffcf,0xffffffc2,0xffffffc3,0xffffffe6,0xd,0xa}; private static final byte[] __V2 = new byte[]{0x3d,0x3d,0x3d,0x3d,0x3d,0x3d,0x3d,0x3d,0x3d,0x3d,0x3d,0x3d,0x3d,0x3d,0x3d,0xd,0xa,0xffffffcf,0xffffffd6,0xffffffd4,0xffffffda,0xffffffca,0xffffffc7,0x6d,0x61,0x73,0x74,0x65,0x72,0xffffffd2,0xffffffb3,0xffffffc3,0xffffffe6}; private static final byte[] __VCR = new byte[]{0xd,0xa}; /* 原模板Cached标示*/ public long getVersion(){ return 1337956717968l; } /* 行映射*/ protected String lineMap = "-32=3-19=3-21=3-";}?

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可见，字节流优化对性能影响很大，最快方式是beetl编译方式，且允许字节流优化。超过了Freemarker4倍。

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对于使用者来说，只需俩行命令就可以了

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group.enableOptimize(); //编译成class运行

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group.enableDirectOutputByte(); //使用字节流输出

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欢迎访问beetl和关注beetl，现在已经提供beetl1.2M1.jar以及相应源码的下载