[英]Trying to use .replace() to replace XML dependencies extracted by using XPATH java
我有一個 pom xml 和 pom-web xml。 我試圖通過使用Xpath將依賴項提取到變量中並嘗試將 pom.Z0F635D0E0F3874FFF8B581C132E 文件中的 do.replace 替換為 pom.xml 但我無法通過變量替換內容,因為if 條件 for.contains() 為 false 。 下面的任何幫助都是我使用的代碼
pom.xml
<project>
<dependencies>
<dependency>
<groupId>com.test.tm</groupId>
<artifactId>gameJdk</artifactId>
<version>1.0.0.1</version>
</dependency>
<!-- For Compress JS -->
<dependency>
<groupId>com.yahoo.platform.yui</groupId>
<artifactId>yuicompressor</artifactId>
<version>2.4.7</version>
</dependency>
<dependency>
<groupId>com.sybase</groupId>
<artifactId>EccpressoFIPSJca</artifactId>
<version>7.0</version>
</dependency>
<dependency>
<groupId>com.sybase</groupId>
<artifactId>EccpressoFIPS</artifactId>
<version>7.0</version>
</dependency>
<dependency>
<groupId>xerces</groupId>
<artifactId>xercesImpl</artifactId>
<version>2.12.0</version>
</dependency>
</dependencies>
</project>
pom-web.xml
<project>
<dependencies>
<dependency>
<groupId>com</groupId>
<artifactId>passwordsdk</artifactId>
<version>3.4.1</version>
</dependency>
<!-- For Compress JS -->
<dependency>
<groupId>com.yahoo.platform.yui</groupId>
<artifactId>yuicompressor</artifactId>
<version>2.4.7</version>
</dependency>
<dependency>
<groupId>com.sybase</groupId>
<artifactId>EccpressoFIPSJca</artifactId>
<version>7.0</version>
</dependency>
<dependency>
<groupId>com.data</groupId>
<artifactId>EccpressoFIPS</artifactId>
<version>7.0</version>
</dependency>
<dependency>
<groupId>tesdt</groupId>
<artifactId>xercesImpl</artifactId>
<version>2.12.0</version>
</dependency>
</dependencies>
</project>
更換后預期的 pom.xml output:
<project>
<dependencies>
<dependency>
<groupId>com</groupId>
<artifactId>passwordsdk</artifactId>
<version>3.4.1</version>
</dependency>
<!-- For Compress JS -->
<dependency>
<groupId>com.yahoo.platform.yui</groupId>
<artifactId>yuicompressor</artifactId>
<version>2.4.7</version>
</dependency>
<dependency>
<groupId>com.sybase</groupId>
<artifactId>EccpressoFIPSJca</artifactId>
<version>7.0</version>
</dependency>
<dependency>
<groupId>com.data</groupId>
<artifactId>EccpressoFIPS</artifactId>
<version>7.0</version>
</dependency>
<dependency>
<groupId>tesdt</groupId>
<artifactId>xercesImpl</artifactId>
<version>2.12.0</version>
</dependency>
</dependencies>
</project>
我使用 xpath 提取依賴關系的代碼
import java.io.StringWriter;
import java.nio.file.Files;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathConstants;
import javax.xml.xpath.XPathExpressionException;
import javax.xml.xpath.XPathFactory;
import org.slf4j.Logger;
import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.xml.sax.SAXException;
public static void main (String args[]){
Path c1=Paths.get(prop.getProperty("testPom"));
Path c2=Paths.get(prop.getProperty("testPomweb"));
//String pom = readFile(CfoServerModifications.class.getResourceAsStream(prop.getProperty("testPom")));
//String web = readFile(CfoServerModifications.class.getResourceAsStream(prop.getProperty("testPomweb")));
String pomFile = new String(Files.readAllBytes(c1),StandardCharsets.UTF_8);
String pomWeb = new String(Files.readAllBytes(c2),StandardCharsets.UTF_8);
Document doc_web = Jsoup.parse(pomWeb,"",Parser.xmlParser());
Document doc_pom = Jsoup.parse(pomFile,"",Parser.xmlParser());
doc_pom.outputSettings().prettyPrint(false);
doc_web.outputSettings().prettyPrint(false);
// System.out.println(doc_pom.outputSettings().prettyPrint(false));
Elements dependencies_web = doc_web.select("project>dependencies");
Elements dependencies_pom = doc_pom.select("project>dependencies");
//log.info(dependencies_web.toString());
// remove the old dependencies
dependencies_pom.clear();
//log.info("pom clear"+dependencies_pom.toString());
//add the new dependencies
dependencies_pom.addAll(dependencies_web);
//log.info("pom web added to pom "+dependencies_pom.toString());
Files.write(Paths.get(prop.getProperty("dummyfile")),doc_pom.toString().getBytes());
我建議您使用Jsoup ,它可以輕松解析 xml 而不是重新發明輪子。
將每個 xml 文件讀取到 memory,從一個 xml 復制依賴項節點並替換為另一個。
這是一個工作示例:
package replacexmlnode;
import java.io.IOException;
import java.io.InputStream;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.nio.file.StandardOpenOption;
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.parser.Parser;
import org.jsoup.select.Elements;
public class ReplaceXmlNode {
public static void main(String[] args) throws IOException {
String pom = readFile(ReplaceNode.class.getResourceAsStream("pom-plain.xml"));
String web = readFile(ReplaceNode.class.getResourceAsStream("pom-web.xml"));
Document doc_web = Jsoup.parse(web,"",Parser.xmlParser());
Document doc_pom = Jsoup.parse(pom,"",Parser.xmlParser());
Elements dependencies_web = doc_web.select("project>dependencies");
//remove old dependencies
doc_pom.select("project>dependencies").remove();
// add new dependencies
doc_pom.select("project").first().appendChild(dependencies_web.first());
doc_pom.outputSettings().prettyPrint(false);
Files.write(Paths.get("pom-plain_out.xml"), doc_pom.toString().getBytes());
}
public static String readFile(InputStream in) throws IOException{
return new String(in.readAllBytes(), StandardCharsets.UTF_8);
}
}
如果您使用 maven 從maven 中央獲取 Jsoup 依賴
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.