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我试图找到一种在我的 Android 应用程序中获取 XML 内容的简单方法。我给 XOM 一个尝试。创建 XML 没问题，但是当我尝试解析一些...时，模拟器会因强制关闭而崩溃。我不知道在哪里看。

我在清单中设置了互联网权限。

在调试/变量中，我可以看到“找不到合适的 SAX2 解析器”，而在 logcat 中则相同

07-22 12:27:51.565: INFO/System.out(683): debugger has settled (1337)
07-22 12:27:52.034: INFO/dalvikvm(683): Could not find method org.apache.xerces.impl.Version.getVersion, referenced from method nu.xom.Builder.<clinit>
07-22 12:27:52.034: WARN/dalvikvm(683): VFY: unable to resolve static method 2371: Lorg/apache/xerces/impl/Version;.getVersion ()Ljava/lang/String;
07-22 12:27:52.044: DEBUG/dalvikvm(683): VFY: replacing opcode 0x71 at 0x000f
07-22 12:27:52.044: DEBUG/dalvikvm(683): VFY: dead code 0x0012-0049 in Lnu/xom/Builder;.<clinit> ()V
07-22 12:27:52.094: WARN/dalvikvm(683): Unable to resolve superclass of Lnu/xom/XML1_0Parser; (402)
07-22 12:27:52.094: WARN/dalvikvm(683): Link of class 'Lnu/xom/XML1_0Parser;' failed
07-22 12:27:52.104: ERROR/dalvikvm(683): Could not find class 'nu.xom.XML1_0Parser', referenced from method nu.xom.Builder.findParser
07-22 12:27:52.104: WARN/dalvikvm(683): VFY: unable to resolve new-instance 191 (Lnu/xom/XML1_0Parser;) in Lnu/xom/Builder;
07-22 12:27:52.104: DEBUG/dalvikvm(683): VFY: replacing opcode 0x22 at 0x0000
07-22 12:27:52.114: DEBUG/dalvikvm(683): VFY: dead code 0x0002-0007 in Lnu/xom/Builder;.findParser (Z)Lorg/xml/sax/XMLReader;
07-22 12:27:52.554: WARN/dalvikvm(683): Unable to resolve superclass of Lnu/xom/JDK15XML1_0Parser; (8)
07-22 12:27:52.554: WARN/dalvikvm(683): Link of class 'Lnu/xom/JDK15XML1_0Parser;' failed
07-22 12:27:58.441: WARN/ActivityManager(64): Launch timeout has expired, giving up wake lock!
07-22 12:27:58.996: WARN/ActivityManager(64): Activity idle timeout for HistoryRecord{44fdcb80 com.xb.xomtest/.main}

我没有得到的一件事是当我将 jar 添加到我的构建路径时的警告。不知道是否与此有关：

[2011-07-22 14:38:13 - XOM] Dx warning: Ignoring InnerClasses attribute for an anonymous inner class
(nu.xom.Element$1) that doesn't come with an
associated EnclosingMethod attribute. This class was probably produced by a
compiler that did not target the modern .class file format. The recommended
solution is to recompile the class from source, using an up-to-date compiler
and without specifying any "-target" type options. The consequence of ignoring
this warning is that reflective operations on this class will incorrectly
indicate that it is *not* an inner class.

编码：

package com.xb.xomtest;

import java.io.IOException;

import nu.xom.Builder;
import nu.xom.Document;
import nu.xom.ParsingException;
import android.app.Activity;
import android.os.Bundle;

public class main extends Activity {

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        try {
              Builder parser = new Builder();
              Document doc = parser.build("http://www.cafeconleche.org/");
            }
            catch (ParsingException ex) {
              //System.err.println("Cafe con Leche is malformed today. How embarrassing!");
            }
            catch (IOException ex) {
              //System.err.println("Could not connect to Cafe con Leche. The site may be down.");
            }


    }
}
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1 回答 1

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xom jar 本身并没有包含您需要的所有内容 - 并且显然没有在其合适的列表中包含标准的 android 解析器。

摘自http://www.xom.nu/install.xhtml：

“Java 1.3 及更早版本没有内置 XML 解析器，因此在这些环境中，您还需要安装 XOM 的支持库。这些库包括 xalan.jar、xercesImpl.jar、normalizer.jar 和 xml-apis.jar， “

对于基本解析，添加 xercesImpl.jar 和 xom-1.2.7.jar 似乎就足够了 - 我的代码有同样的问题（抱怨缺少 sax2 解析器）现在可以解析输入。

我收到关于内部类的相同 Dx 警告，所以这似乎不是致命的:-)。

于 2011-08-25T10:00:42.597 回答