check if the result of maybeCompileJrxmlFile is empty

src/main/java/com/uas/report/service/impl/PrintServiceImpl.java

@@ -1,43 +1,5 @@
 package com.uas.report.service.impl;
 
-import java.io.ByteArrayInputStream;
-import java.io.ByteArrayOutputStream;
-import java.io.File;
-import java.io.FileNotFoundException;
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
-import java.sql.Connection;
-import java.sql.PreparedStatement;
-import java.sql.ResultSet;
-import java.sql.ResultSetMetaData;
-import java.sql.SQLException;
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.HashSet;
-import java.util.List;
-import java.util.Map;
-import java.util.Objects;
-import java.util.Set;
-import java.util.regex.Matcher;
-import java.util.regex.Pattern;
-
-import javax.sql.DataSource;
-
-import org.apache.commons.io.output.FileWriterWithEncoding;
-import org.dom4j.Attribute;
-import org.dom4j.Document;
-import org.dom4j.DocumentException;
-import org.dom4j.Element;
-import org.dom4j.Node;
-import org.dom4j.io.SAXReader;
-import org.dom4j.io.XMLWriter;
-import org.dom4j.tree.DefaultElement;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.stereotype.Service;
-
 import com.alibaba.fastjson.JSONObject;
 import com.uas.report.SpecialProperties;
 import com.uas.report.SystemProperties;
@@ -47,21 +9,8 @@ import com.uas.report.model.ExportType;
 import com.uas.report.model.Master;
 import com.uas.report.service.FileService;
 import com.uas.report.service.PrintService;
-import com.uas.report.util.CollectionUtils;
-import com.uas.report.util.ExceptionUtils;
-import com.uas.report.util.FileUtils;
-import com.uas.report.util.MasterManager;
-import com.uas.report.util.Platform;
-import com.uas.report.util.ReportConstants;
-import com.uas.report.util.ReportUtils;
-import com.uas.report.util.StringUtils;
-
-import net.sf.jasperreports.engine.JRException;
-import net.sf.jasperreports.engine.JRParameter;
-import net.sf.jasperreports.engine.JasperCompileManager;
-import net.sf.jasperreports.engine.JasperFillManager;
-import net.sf.jasperreports.engine.JasperPrint;
-import net.sf.jasperreports.engine.JasperReport;
+import com.uas.report.util.*;
+import net.sf.jasperreports.engine.*;
 import net.sf.jasperreports.engine.design.JasperDesign;
 import net.sf.jasperreports.engine.export.JRPdfExporter;
 import net.sf.jasperreports.engine.export.JRRtfExporter;
@@ -70,13 +19,23 @@ import net.sf.jasperreports.engine.export.JRXlsExporter;
 import net.sf.jasperreports.engine.export.ooxml.JRXlsxExporter;
 import net.sf.jasperreports.engine.fill.JRFileVirtualizer;
 import net.sf.jasperreports.engine.xml.JRXmlLoader;
-import net.sf.jasperreports.export.ExporterInput;
-import net.sf.jasperreports.export.OutputStreamExporterOutput;
-import net.sf.jasperreports.export.SimpleExporterInput;
-import net.sf.jasperreports.export.SimpleOutputStreamExporterOutput;
-import net.sf.jasperreports.export.SimplePdfReportConfiguration;
-import net.sf.jasperreports.export.SimpleWriterExporterOutput;
-import net.sf.jasperreports.export.WriterExporterOutput;
+import net.sf.jasperreports.export.*;
+import org.apache.commons.io.output.FileWriterWithEncoding;
+import org.dom4j.*;
+import org.dom4j.io.SAXReader;
+import org.dom4j.io.XMLWriter;
+import org.dom4j.tree.DefaultElement;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import javax.sql.DataSource;
+import java.io.*;
+import java.sql.*;
+import java.util.*;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
 
 /**
  * 报表打印
@@ -178,9 +137,12 @@ public class PrintServiceImpl implements PrintService {
 			logger.info("dataSource.getConnection done..." + userName);
 
 			String jasperFilePath = maybeCompileJrxmlFile(jrxmlFilePath, false, otherParameters, connection);
+			if(StringUtils.isEmpty(jasperFilePath)){
+				throw new IllegalStateException("编译报表模板失败: " + jrxmlFilePath);
+			}
 
 			Map<String, Object> result = new HashMap<>();
-			byte[] data = null;
+			byte[] data;
 			// 从数据库获取数据填充报表
 			JasperPrint jasperPrint = null;
 			ByteArrayOutputStream outputStream = new ByteArrayOutputStream();