Java 缺少构建路径条目
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build path entries are missing
提问by user3696672
I have copied my project from one system to another,now I am trying to run it,I am having a message in build path that 95 build path entries are missing. I am having main problem with importing some packages like:
我已将我的项目从一个系统复制到另一个系统，现在我正在尝试运行它，我在构建路径中收到一条消息，指出缺少 95 个构建路径条目。我在导入一些包时遇到了主要问题，例如：
import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.JRField
import net.sf.jasperreports.engine.*;
import net.sf.jasperreports.engine.design.JasperDesign;
import net.sf.jasperreports.engine.xml.JRXmlLoader;
import com.mysql.jdbc.Connection;
import com.mysql.jdbc.PreparedStatement;
import com.mysql.jdbc.Statement;
import org.krysalis.barcode4j.BarcodeDimension;
import org.krysalis.barcode4j.HumanReadablePlacement;
import org.krysalis.barcode4j.impl.AbstractBarcodeBean;
import org.krysalis.barcode4j.impl.code128.Code128Bean;
import org.krysalis.barcode4j.impl.upcean.EAN13Bean;
import org.krysalis.barcode4j.output.java2d.Java2DCanvasProvider;
import org.jdesktop.swingx.JXTaskPane;
import org.jdesktop.swingx.JXTaskPaneContainer;
import orgimp.pushingpixels.substance.api.SubstanceLookAndFeel;
import org.pushingpixels.substance.api.SubstanceSkin;
回答by Nirav Prajapati
right click on project
右键单击项目
go to properties-->java build path--->Libraries
去 properties-->java build path--->Libraries
add all library that needs in your project
添加项目中需要的所有库
and also check your java compiler
并检查你的java编译器
go to properties-->java compiler
去 properties-->java compiler
choose necessary java compiler
选择必要的java编译器
------------------------------- OR ---------------------------------------------
- - - - - - - - - - - - - - - - 或者 - - - - - - - - - ---------------------------
it may be possible that required jar files are not present in your lib folder
您的 lib 文件夹中可能不存在所需的 jar 文件
回答by Abhishek Mishra
if you are using eclipse ,then right click on project
如果您使用的是 eclipse，则右键单击项目
Properties->java build path
now check source all class file src is added or not,
check libraries that all necessary jar is added or not
if yor are running through comand prompt then you need to set path in command line
回答by user4097032
Try deleting those entries from build path (make sure you leave the jars which eclipse already can find).
尝试从构建路径中删除这些条目（确保保留 eclipse 已经可以找到的 jars）。
