Eclipse Maven：“无法解析为类型”错误
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Eclipse Maven: "Cannot be resolved to a type" error
提问by Dakshila Kamalsooriya
I am trying to build a simple sentence detector using OpenNLP 1.5.0. I am using Maven Eclipse for that. I downloaded "en-sent.bin" model file from http://opennlp.sourceforge.net/models-1.5/and placed it inside src/main/resources folder. My pom.xml file is as follows.
我正在尝试使用 OpenNLP 1.5.0 构建一个简单的句子检测器。我为此使用了 Maven Eclipse。我从http://opennlp.sourceforge.net/models-1.5/下载了“en-sent.bin”模型文件并将其放置在 src/main/resources 文件夹中。我的 pom.xml 文件如下。
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>dakshila.research</groupId>
<artifactId>new1</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>new1</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
</dependencies>
</project>
Inside 'src/main/java' folder I have created "dk.research.new1" package and its App.java file contains the following code.
在“src/main/java”文件夹中，我创建了“dk.research.new1”包，其 App.java 文件包含以下代码。
package dk.research.new1;
public class App{
public void SentenceSplitter() {
SentenceDetector sentenceDetector = null;
InputStream modelIn = null;
try {
modelIn = getClass().getResourceAsStream("en-sent.bin");
final SentenceModel sentenceModel = new SentenceModel(modelIn);
modelIn.close();
sentenceDetector = new SentenceDetectorME(sentenceModel);
} catch (final IOException ioe) {
ioe.printStackTrace();
} finally {
if (modelIn != null) {
try {
modelIn.close();
} catch (final IOException e) {}
}
}
String sentences[]=(sentenceDetector.sentDetect("I am a student. I am learning programming. I like java language."));
for(int i=0; i<sentences.length;i++) {
System.out.println(sentences[i]);
}
}
}
I get the following error messages in App.java file.
我在 App.java 文件中收到以下错误消息。
- SentenceDetector cannot be resolved to a type
- InputStream cannot be resolved to a type
- SentenceModel cannot be resolved to a type
- SentenceDetectorME cannot be resolved to a type
- IOException cannot be resolved to a type
- SentenceDetector 无法解析为类型
- InputStream 无法解析为类型
- SentenceModel 无法解析为类型
- SentenceDetectorME 无法解析为类型
- IOException 无法解析为类型
Why am I getting these errors? I tried Project->Clean but I can't get rid of these errors. What do I have to do to get this solved?
为什么我会收到这些错误？我试过 Project->Clean 但我无法摆脱这些错误。我该怎么做才能解决这个问题？
回答by PatrykG
In your POM in <dependencies>section add:
在您的 POM<dependencies>部分添加：
<dependency>
<groupId>org.apache.opennlp</groupId>
<artifactId>opennlp-tools</artifactId>
<version>1.6.0</version>
</dependency>
And then, you have to import classes in Java file before line public class Appadd:
然后，您必须在public class App添加行之前在 Java 文件中导入类：
import java.io.IOException;
import java.io.InputStream;
import opennlp.tools.sentdetect.SentenceDetector;
import opennlp.tools.sentdetect.SentenceDetectorME;
import opennlp.tools.sentdetect.SentenceModel;
