PHP通过PHP/JAVA Bridge调用JasperReport报表
本文说到的是用PHP-Java-Bridge技术实现JasperReport web报表的输出。
JasperReport(http://jasperforge.org/),是一个强大、灵活的报表生成工具,能够展示丰富的页面内容,并将之转换成PDF,HTML,或者XML格式。该库完全由Java写成,可以用于在各种Java应用程序,包括J2EE,Web应用程序中生成动态内容。
附带报表设计工具是iReport(免费的),该工具可以实现可视化报表设计,可以输出PDF,HTML,WORD的常用格式报表,保存后的文件为.jrxml后缀,需要Java环境才可以正常运行,PHP不能直接调用。
既然PHP不能直接调用,这就不得不借助于PHP-Java-Bridge技术。具体可以参考http://php-java-bridge.sourceforge.net/pjb/index.php
1、安装tomcat,如果是选择exe安装版,安装的时候会自动安装jre环境,如果是压缩版tomcat,需要另外安装java环境,配置也更繁琐,推荐用安装版的tomcat。
把tomcat的端口配置6000,默认的8080端口被占用,站点根目录为tomcat下面的webapps
2、下载php-java-bridge包,地址http://php-java-bridge.sourceforge.net/pjb/download.php,下载后解压,里面有一个JavaBridge.war的文件,将这个文件拷贝到tomcat的webapps,运行http://localhost:6000/JavaBridge/之后,会在webapps生成一个JavaBridge的目录。
3、安装ireport3.0(有更新的版本) 拷贝C:\Program Files\JasperSoft\iReport-3.0.0\lib 中的所有内容,拷贝到tomcat的webapps/JavaBridge/WEB-INF/lib/下,这些包需要能被JavaBridge找得到才行。
4、从生成的JavaBridge目录下拷贝java目录到PHP站点下(或者找到php.ini这个文件,将里面的allow_url_include参数改为on,直接引用JavaBridge下的java/java.inc)。下载报表文件http://www.rjohnson.id.au/download/jasper/test.jrxml放在PHP站点下。
然后在PHP站点下建立一个PHP文件
ireport.php(代码中涉及到端口的,需要根据个人情况更改)
View Code
1 <?php 2 3 /** 4 * see if the java extension was loaded. 5 */ 6 function checkJavaExtension() 7 { 8 if(!extension_loaded('java')) 9 { 10 $sapi_type = php_sapi_name(); 11 12 //$port = (isset($_SERVER['SERVER_PORT']) && (($_SERVER['SERVER_PORT'])>1024)) ? $_SERVER['SERVER_PORT'] : '6000'; 13 //echo $port; 14 $port = 6000; 15 if ($sapi_type == "cgi" || $sapi_type == "cgi-fcgi" || $sapi_type == "cli") 16 { 17 if(!(PHP_SHLIB_SUFFIX=="so" && @dl('java.so'))&&!(PHP_SHLIB_SUFFIX=="dll" && @dl('php_java.dll'))&&!(@include_once("java/Java.inc"))&&!(require_once("http://127.0.0.1:$port/JavaBridge/java/Java.inc"))) 18 { 19 return "java extension not installed."; 20 } 21 } 22 else 23 { 24 if(!(@include_once("java/Java.inc"))) 25 { 26 27 require_once("http://127.0.0.1:$port/JavaBridge/java/Java.inc"); 28 } 29 } 30 } 31 if(!function_exists("java_get_server_name")) 32 { 33 return "The loaded java extension is not the PHP/Java Bridge"; 34 } 35 36 return true; 37 } 38 39 /** 40 * convert a php value to a java one... 41 * @param string $value 42 * @param string $className 43 * @returns boolean success 44 */ 45 function convertValue($value, $className) 46 { 47 // if we are a string, just use the normal conversion 48 // methods from the java extension... 49 try 50 { 51 if ($className == 'java.lang.String') 52 { 53 $temp = new Java('java.lang.String', $value); 54 return $temp; 55 } 56 else if ($className == 'java.lang.Boolean' || 57 $className == 'java.lang.Integer' || 58 $className == 'java.lang.Long' || 59 $className == 'java.lang.Short' || 60 $className == 'java.lang.Double' || 61 $className == 'java.math.BigDecimal') 62 { 63 $temp = new Java($className, $value); 64 return $temp; 65 } 66 else if ($className == 'java.sql.Timestamp' || 67 $className == 'java.sql.Time') 68 { 69 $temp = new Java($className); 70 $javaObject = $temp->valueOf($value); 71 return $javaObject; 72 } 73 } 74 catch (Exception $err) 75 { 76 echo ( 'unable to convert value, ' . $value . 77 ' could not be converted to ' . $className); 78 return false; 79 } 80 81 echo ( 'unable to convert value, class name '.$className. 82 ' not recognised'); 83 return false; 84 } 85 86 87 checkJavaExtension(); 88 89 $compileManager = new JavaClass("net.sf.jasperreports.engine.JasperCompileManager"); 90 $report = $compileManager->compileReport(realpath("test.jrxml")); 91 92 $fillManager = new JavaClass("net.sf.jasperreports.engine.JasperFillManager"); 93 94 $params = new Java("java.util.HashMap"); 95 $params->put("text", "This is a test string"); 96 $params->put("number", 3.00); 97 $params->put("date", convertValue("2007-12-31 0:0:0", "java.sql.Timestamp")); 98 99 $emptyDataSource = new Java("net.sf.jasperreports.engine.JREmptyDataSource");100 $jasperPrint = $fillManager->fillReport($report, $params, $emptyDataSource);101 102 $outputPath = realpath(".")."/"."output.pdf";103 104 $exportManager = new JavaClass("net.sf.jasperreports.engine.JasperExportManager");105 $exportManager->exportReportToPdfFile($jasperPrint, $outputPath);106 107 header("Content-type: application/pdf");108 readfile($outputPath);109 110 unlink($outputPath);111 112 ?>
5、访问PHP站点,http://localhost:8080/ireport.php,就可以输出PDF文档。

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