问题：
JasperReports库自定义可视化无法正确呈现UTF8组件
唐利
我正在使用JasperReports库从自定义Java应用程序生成PDF。然而，当在自定义可视化组件中呈现欧元符号时，生成的pdf显示的是一个符号（PhantomJs和Chromium都出现了这种情况）。报告（文本字段）中的其余欧元符号都正确显示了，尽管它们都使用了相同的字体。
另一方面，如果使用PhantomJs从JasperStudio呈现相同的报表，则显示正确的符号。
我已经检查了传递给chrome的html文件，因为它暂时存储在temp文件夹中，并且它似乎正确地用UTF-8编码（见下文），所以我认为这可能是一个与jasper提供给chrome或PhantomJS的字体文件有关的问题。
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<link rel="stylesheet" type="text/css" href="jr_script_3615012621213017572_feeRenderer.css" title="Style">
<script src="jr_res_12941692111646429500_require.js"></script>
<script src="jr_res_14211739430443032080_cv-component_static.js"></script>
<script src="jr_res_10307871901394985341_feeRenderer.min.js"></script>
</head>
<body>
<div id="element423553011047886097313196921978673211730" class="jr_cvc_element" style="width: 389px; height: 290px;" />
<script class="jasperreports">
require(["cv-component"], function(Comp) {
new Comp({
"id": "element423553011047886097313196921978673211730",
"renderer": "d3Circle",
"instanceData": {
"series": [
[{
"Currency_symbol": "€",
"Currency_height": "0.5",
"Cents_height": "0.25",
"Separation": "0",
"Cents": "0",
"Currency_margin": "0",
"Units_height": "1",
"Units": "8",
"Margin": "0"
}]
],
"module": "d3Circle",
"css_uri": "D:\\Dhom\\Documents\\Projects\\Myreport\\Test5\\feeRenderer.css",
"width": 389,
"id": "element423553011047886097313196921978673211730",
"height": 290,
"script_uri": "D:\\Dhom\\Documents\\Projects\\Myreport\\Test5\\feeRenderer.min.js",
"animation": false
}
});
});
</script>
</body>
</html>
以前有人面临过这个问题吗？
提前致谢
<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\"?>
<!DOCTYPE svg PUBLIC \"-//W3C//DTD SVG 1.1//EN\" \"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd\"><svg xmlns=\ "http://www.w3.org/2000/svg\" id=\ "element66576560284652498011372360525284671058svg\" width=\ "389\" height=\ "240\" style=\ "fill: transparent;\" version=\ "1.1\"><defs><style type=\"text/css\">\nsvg circle { fill: rgb(240, 0, 255); }\n.number-text { fill: white; font-family: arial; }</style></defs><text dominant-baseline=\"hanging\" aligment-baseline=\"hanging\" x=\"389\" y=\"0\" text-anchor=\"end\" class=\"number-text\" style=\"font-size: 60px;\">.95</text><text dominant-baseline=\"hanging\" aligment-baseline=\"hanging\" x=\"305.578125\" y=\"0\" text-anchor=\"end\" class=\"number-text\" style=\"font-size: 240px;\">8</text><text dominant-baseline=\"hanging\" aligment-baseline=\"hanging\" x=\"172.09375\" y=\"0\" text-anchor=\"end\" class=\"number-text\" style=\"font-size: 120px;\">\ufffd</text></svg>
通过记录包含货币符号的变量，看起来javascript解释器正在更改它。因此，如果报表被导出为html并在Chrome中打开，它将得到正确的呈现，但是当javascript代码被解释为pdf报表生成例程的一部分时，解释器无法识别该字符并将其更改为Unicode替换字符。该变量的日志值显示在java程序下面提供的日志中的第10547行：
3587 [main] DEBUG net.sf.jasperreports.customvisualization.export.ChromeCVElementImageDataProvider - wrote CV render HTML page to C:\Users\Dhom\AppData\Local\Temp\cv_1203404104433554074.html
3589 [main] DEBUG net.sf.jasperreports.chrome.BrowserService - page evaluation at file:/C:/Users/Dhom/AppData/Local/Temp/cv_1203404104433554074.html
3595 [main] INFO net.sf.jasperreports.chrome.ChromeInstance - Launching Chrome instance 1 with configuration executable: D:\Dhom\Documents\Projects\Myreport\Test5\chrome.exe, headless: true, arguments: {}, idle timeout: 900000, live timeout: 7200000
3601 [main] INFO com.github.kklisura.cdt.launch.ChromeLauncher - Launching chrome process D:\Dhom\Documents\Projects\Myreport\Test5\chrome.exe with arguments {no-first-run=true, remote-debugging-port=0, mute-audio=true, disable-client-side-phishing-detection=true, disable-popup-blocking=true, disable-default-apps=true, disable-extensions=true, metrics-recording-only=true, no-default-browser-check=true, disable-background-timer-throttling=true, disable-translate=true, safebrowsing-disable-auto-update=true, headless=true, hide-scrollbars=true, disable-background-networking=true, disable-prompt-on-repost=true, user-data-dir=C:\Users\Dhom\AppData\Local\Temp\cdt-user-data-dir3328865212396958053, disable-hang-monitor=true, disable-sync=true, disable-gpu=true}
8633 [main] DEBUG net.sf.jasperreports.chrome.ChromeInstanceRepository - schedule chrome instance 1 idle timeout check after 900000
8635 [main] DEBUG net.sf.jasperreports.chrome.ChromeInstanceRepository - schedule chrome instance 1 timeout after 7200000
8637 [main] DEBUG net.sf.jasperreports.chrome.ChromeInstance - using chrome instance 1
9724 [main] DEBUG net.sf.jasperreports.chrome.StandardPageCreator - created tab 902F248522DDE30E16DE2D3CD552FBD9
10020 [main] DEBUG com.github.kklisura.cdt.services.impl.WebSocketServiceImpl - Connecting to ws server ws://localhost:1906/devtools/page/902F248522DDE30E16DE2D3CD552FBD9
10350 [Grizzly(1)] INFO com.github.kklisura.cdt.services.impl.WebSocketServiceImpl - Connected to ws ws://localhost:1906/devtools/page/902F248522DDE30E16DE2D3CD552FBD9
10438 [main] DEBUG com.github.kklisura.cdt.services.impl.WebSocketServiceImpl - Sending message {"id":1,"method":"Log.enable","params":{}} on ws://localhost:1906/devtools/page/902F248522DDE30E16DE2D3CD552FBD9
10443 [Grizzly(2)] DEBUG com.github.kklisura.cdt.services.impl.WebSocketServiceImpl - Received message {"id":1,"result":{}} on ws://localhost:1906/devtools/page/902F248522DDE30E16DE2D3CD552FBD9
10462 [main] DEBUG com.github.kklisura.cdt.services.impl.WebSocketServiceImpl - Sending message {"id":2,"method":"Runtime.enable","params":{}} on ws://localhost:1906/devtools/page/902F248522DDE30E16DE2D3CD552FBD9
10466 [Grizzly(1)] DEBUG com.github.kklisura.cdt.services.impl.WebSocketServiceImpl - Received message {"method":"Runtime.executionContextCreated","params":{"context":{"id":1,"origin":"://","name":"","uniqueId":"-1037893551376530969.-1504717943394719259","auxData":{"isDefault":true,"type":"default","frameId":"902F248522DDE30E16DE2D3CD552FBD9"}}}} on ws://localhost:1906/devtools/page/902F248522DDE30E16DE2D3CD552FBD9
10467 [Grizzly(1)] DEBUG com.github.kklisura.cdt.services.impl.WebSocketServiceImpl - Received message {"id":2,"result":{}} on ws://localhost:1906/devtools/page/902F248522DDE30E16DE2D3CD552FBD9
10483 [main] DEBUG com.github.kklisura.cdt.services.impl.WebSocketServiceImpl - Sending message {"id":3,"method":"Page.enable","params":{}} on ws://localhost:1906/devtools/page/902F248522DDE30E16DE2D3CD552FBD9
10484 [Grizzly(2)] DEBUG com.github.kklisura.cdt.services.impl.WebSocketServiceImpl - Received message {"id":3,"result":{}} on ws://localhost:1906/devtools/page/902F248522DDE30E16DE2D3CD552FBD9
10486 [main] DEBUG com.github.kklisura.cdt.services.impl.WebSocketServiceImpl - Sending message {"id":4,"method":"Page.navigate","params":{"url":"file:/C:/Users/Dhom/AppData/Local/Temp/cv_1203404104433554074.html"}} on ws://localhost:1906/devtools/page/902F248522DDE30E16DE2D3CD552FBD9
10489 [Grizzly(1)] DEBUG com.github.kklisura.cdt.services.impl.WebSocketServiceImpl - Received message {"id":4,"result":{"frameId":"902F248522DDE30E16DE2D3CD552FBD9","loaderId":"82EC151841E6F98D209D3B011A2A2FBF"}} on ws://localhost:1906/devtools/page/902F248522DDE30E16DE2D3CD552FBD9
10490 [Grizzly(2)] DEBUG com.github.kklisura.cdt.services.impl.WebSocketServiceImpl - Received message {"method":"Page.frameStartedLoading","params":{"frameId":"902F248522DDE30E16DE2D3CD552FBD9"}} on ws://localhost:1906/devtools/page/902F248522DDE30E16DE2D3CD552FBD9
10494 [Grizzly(1)] DEBUG com.github.kklisura.cdt.services.impl.WebSocketServiceImpl - Received message {"method":"Runtime.executionContextsCleared","params":{}} on ws://localhost:1906/devtools/page/902F248522DDE30E16DE2D3CD552FBD9
10495 [Grizzly(1)] DEBUG com.github.kklisura.cdt.services.impl.WebSocketServiceImpl - Received message {"method":"Page.frameNavigated","params":{"frame":{"id":"902F248522DDE30E16DE2D3CD552FBD9","loaderId":"82EC151841E6F98D209D3B011A2A2FBF","url":"file:///C:/Users/Dhom/AppData/Local/Temp/cv_1203404104433554074.html","domainAndRegistry":"","securityOrigin":"file://","mimeType":"text/html","adFrameType":"none","secureContextType":"Secure","crossOriginIsolatedContextType":"NotIsolated","gatedAPIFeatures":["SharedArrayBuffers","SharedArrayBuffersTransferAllowed"]}}} on ws://localhost:1906/devtools/page/902F248522DDE30E16DE2D3CD552FBD9
10497 [Grizzly(2)] DEBUG com.github.kklisura.cdt.services.impl.WebSocketServiceImpl - Received message {"method":"Runtime.executionContextCreated","params":{"context":{"id":2,"origin":"file://","name":"","uniqueId":"-4551564477363548089.1093106506060346497","auxData":{"isDefault":true,"type":"default","frameId":"902F248522DDE30E16DE2D3CD552FBD9"}}}} on ws://localhost:1906/devtools/page/902F248522DDE30E16DE2D3CD552FBD9
10497 [main] DEBUG net.sf.jasperreports.chrome.BrowserService - waiting for result, timeout 60000
10514 [Grizzly(1)] DEBUG com.github.kklisura.cdt.services.impl.WebSocketServiceImpl - Received message {"method":"Page.loadEventFired","params":{"timestamp":247828.898653}} on ws://localhost:1906/devtools/page/902F248522DDE30E16DE2D3CD552FBD9
10515 [Grizzly(1)] DEBUG com.github.kklisura.cdt.services.impl.WebSocketServiceImpl - Received message {"method":"Page.frameStoppedLoading","params":{"frameId":"902F248522DDE30E16DE2D3CD552FBD9"}} on ws://localhost:1906/devtools/page/902F248522DDE30E16DE2D3CD552FBD9
10516 [Grizzly(2)] DEBUG com.github.kklisura.cdt.services.impl.WebSocketServiceImpl - Received message {"method":"Page.domContentEventFired","params":{"timestamp":247828.898826}} on ws://localhost:1906/devtools/page/902F248522DDE30E16DE2D3CD552FBD9
10521 [pool-1-thread-1] DEBUG com.github.kklisura.cdt.services.impl.WebSocketServiceImpl - Sending message {"id":5,"method":"Runtime.evaluate","params":{"expression":"renderResult(true)"}} on ws://localhost:1906/devtools/page/902F248522DDE30E16DE2D3CD552FBD9
10522 [Grizzly(1)] DEBUG com.github.kklisura.cdt.services.impl.WebSocketServiceImpl - Received message {"id":5,"result":{"result":{"type":"object","subtype":"promise","className":"Promise","description":"Promise","objectId":"-3590625203254494070.2.1"}}} on ws://localhost:1906/devtools/page/902F248522DDE30E16DE2D3CD552FBD9
10547 [Grizzly(2)] DEBUG com.github.kklisura.cdt.services.impl.WebSocketServiceImpl - Received message {"method":"Runtime.consoleAPICalled","params":{"type":"log","args":[{"type":"string","value":"\ufffd"}],"executionContextId":2,"timestamp":1.621509394264413e+12,"stackTrace":{"callFrames":[{"functionName":"","scriptId":"6","url":"file:///C:/Users/Dhom/AppData/Local/Temp/jr_res_8667172309765663436_feeRenderer.min.js","lineNumber":4,"columnNumber":19892},{"functionName":"","scriptId":"4","url":"file:///C:/Users/Dhom/AppData/Local/Temp/jr_res_8570279741294855884_cv-component_static.js","lineNumber":47,"columnNumber":16},{"functionName":"execCb","scriptId":"3","url":"file:///C:/Users/Dhom/AppData/Local/Temp/jr_res_8609129502099932916_require.js","lineNumber":1695,"columnNumber":32},{"functionName":"check","scriptId":"3","url":"file:///C:/Users/Dhom/AppData/Local/Temp/jr_res_8609129502099932916_require.js","lineNumber":882,"columnNumber":50},{"functionName":"enable","scriptId":"3","url":"file:///C:/Users/Dhom/AppData/Local/Temp/jr_res_8609129502099932916_require.js","lineNumber":1175,"columnNumber":21},{"functionName":"init","scriptId":"3","url":"file:///C:/Users/Dhom/AppData/Local/Temp/jr_res_8609129502099932916_require.js","lineNumber":787,"columnNumber":25},{"functionName":"","scriptId":"3","url":"file:///C:/Users/Dhom/AppData/Local/Temp/jr_res_8609129502099932916_require.js","lineNumber":1459,"columnNumber":35}]}}} on ws://localhost:1906/devtools/page/902F248522DDE30E16DE2D3CD552FBD9
10552 [pool-1-thread-1] DEBUG com.github.kklisura.cdt.services.impl.WebSocketServiceImpl - Sending message {"id":6,"method":"Runtime.awaitPromise","params":{"returnByValue":true,"generatePreview":false,"promiseObjectId":"-3590625203254494070.2.1"}} on ws://localhost:1906/devtools/page/902F248522DDE30E16DE2D3CD552FBD9
10574 [Grizzly(1)] DEBUG com.github.kklisura.cdt.services.impl.WebSocketServiceImpl - Received message {"id":6,"result":{"result":{"type":"string","value":"<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\"?><!DOCTYPE svg PUBLIC \"-//W3C//DTD SVG 1.1//EN\" \"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd\"><svg xmlns=\"http://www.w3.org/2000/svg\" id=\"element1445529659355478804511607219085981653206svg\" width=\"389\" height=\"240\" style=\"fill: transparent;\" version=\"1.1\"><defs><style type=\"text/css\">\nsvg circle { fill: rgb(240, 0, 255); }\n.fee-text { fill: white; font-family: arial; }</style></defs><text dominant-baseline=\"hanging\" aligment-baseline=\"hanging\" x=\"389\" y=\"0\" text-anchor=\"end\" class=\"fee-text\" style=\"font-size: 60px;\">.95</text><text dominant-baseline=\"hanging\" aligment-baseline=\"hanging\" x=\"305.578125\" y=\"0\" text-anchor=\"end\" class=\"fee-text\" style=\"font-size: 240px;\">8</text><text dominant-baseline=\"hanging\" aligment-baseline=\"hanging\" x=\"172.09375\" y=\"0\" text-anchor=\"end\" class=\"fee-text\" style=\"font-size: 120px;\">\ufffd</text></svg>"}}} on ws://localhost:1906/devtools/page/902F248522DDE30E16DE2D3CD552FBD9
10577 [main] INFO com.github.kklisura.cdt.services.impl.WebSocketServiceImpl - Web socket connection closed NORMAL_CLOSURE,
10581 [pool-1-thread-1] DEBUG net.sf.jasperreports.chrome.BrowserService - Page console LOG: ?
共有1个答案
叶德本
这个问题最终导致Jasper Reports Library（直到版本6.17）中的一个bug，原因是没有正确地将Chrome和Jasper之间的通信流设置为使用UTF-8（请参见https://github.com/tibcosoftware/jasperreports/issues/189#issuecomment-845341796和html" target="_blank">https://github.com/tibcosoftware/jasperreports/issues/190)。结果，使用了JVM的默认字符编码，导致在使用某些字符时数据损坏。
解决方法1：找到原因的Jasper Reports维护者（github用户dadza）建议了一个解决方法，直到发布更正版本，包括在运行程序时通过添加以下选项来设置正确的字符编码:-dfile.encoding=utf-8
变通方法2：根据https://stackoverflow.com/a/14987992/15974273，在某些JVM版本中，可以在运行时使用dirty hack更改默认字符编码。虽然强烈建议不要使用它，但在主程序中添加以下代码行可能会使那些符号正确呈现（根据提供此解决方案的原始答案的一些注释，security manager可能要求关闭）：
System.setProperty("file.encoding","UTF-8");
Field charset = Charset.class.getDeclaredField("defaultCharset");
charset.setAccessible(true);
charset.set(null,null);
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