Question

Maven资源库中是否有一个Java API可以解析HTML文档并验证它是否格式正确？

更新：

我程序中的代码如下所示：

    url = "C:/Users/user1/Desktop/testHTML.html";
    FileInputStream fi = new FileInputStream(url);

    Tidy tidy = new Tidy();
    //tidy.setQuiet(true);
    tidy.parse(fi, null);
    //tidy.parseDOM(fi, fo);
    int tempWarnings = tidy.getParseWarnings();
    int tempErrors = tidy.getParseErrors();`

我的HTML文件中的内容如下：

<html>
<head>
    <title>This is a sample doc</title>
</head>
<body>
    <p> <b>this is a sample paragraph</b></p>

然而，即使在DOCTYPE缺失的情况下，Tidy也不会发出任何警告或错误。

Answer 1

是的，JTidy位于Maven ....

对于一些HTML相关活动来说，它是一个很好的库。

Answer 2

正如@rolfl所说，你可以使用JTidy。虽然JTidy文档很糟糕（我之前从未使用过），所以我下载了它并尝试使用它。此测试运行并提供3个警告：

package com.sandbox;

import org.junit.Test;
import org.w3c.tidy.Tidy;

import java.io.StringReader;
import java.io.StringWriter;

import static org.junit.Assert.assertEquals;

public class SandboxTest {

    @Test
    public void myTest() {
        Tidy tidy = new Tidy();
        StringWriter writer = new StringWriter();
        tidy.parse(new StringReader("invalid html"), writer);
        assertEquals(0, tidy.getParseErrors());
        assertEquals(0, tidy.getParseWarnings());
    }
}

这个断言在最后一行失败了，因为它返回3而不是0.这就是你要找的东西吗？

我尝试使用您的输入，我收到了警告：

package com.sandbox;

import org.junit.Test;
import org.w3c.tidy.Tidy;

import java.io.StringReader;
import java.io.StringWriter;

import static org.junit.Assert.assertEquals;

public class SandboxTest {

    @Test
    public void myTest() {
        Tidy tidy = new Tidy();

        StringWriter writer = new StringWriter();
        tidy.parse(new StringReader("<html>\n" +
                "<head>\n" +
                "    <title>This is a sample doc</title>\n" +
                "</head>\n" +
                "<body>\n" +
                "    <p> <b>this is a sample paragraph</b></p>"), writer);
        assertEquals(0, tidy.getParseErrors());
        assertEquals(0, tidy.getParseWarnings());
    }
}

输出：

line 1 column 1 - Warning: missing <!DOCTYPE> declaration
InputStream: Document content looks like HTML 2.0
1 warning, no errors were found!

java.lang.AssertionError: 
Expected :0
Actual   :1
  <Click to see difference>

    at org.junit.Assert.fail(Assert.java:93)
    at org.junit.Assert.failNotEquals(Assert.java:647)
    at org.junit.Assert.assertEquals(Assert.java:128)
    at org.junit.Assert.assertEquals(Assert.java:472)
    at org.junit.Assert.assertEquals(Assert.java:456)
    at com.sandbox.SandboxTest.myTest(SandboxTest.java:25)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:45)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:42)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:68)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:47)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:300)
    at org.junit.runner.JUnitCore.run(JUnitCore.java:157)
    at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:77)
    at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:195)
    at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:63)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)


Process finished with exit code -1

可以验证HTML文档是否格式正确的Java API

2 个答案: