{"id":433,"date":"2024-12-21T23:46:51","date_gmt":"2024-12-21T15:46:51","guid":{"rendered":"https:\/\/www.laixuexila.com\/?p=433"},"modified":"2024-12-22T00:28:38","modified_gmt":"2024-12-21T16:28:38","slug":"%e4%b8%ba%e4%bb%80%e4%b9%88%e5%9c%a8%e5%8a%a8%e6%80%81%e6%9b%b4%e6%96%b0-jfreechart-%e5%9b%be%e8%a1%a8%e6%95%b0%e6%8d%ae%e6%97%b6%e4%bc%9a%e5%87%ba%e7%8e%b0%e7%b4%a2%e5%bc%95%e8%b6%8a","status":"publish","type":"post","link":"https:\/\/www.laixuexila.com\/index.php\/2024\/12\/21\/%e4%b8%ba%e4%bb%80%e4%b9%88%e5%9c%a8%e5%8a%a8%e6%80%81%e6%9b%b4%e6%96%b0-jfreechart-%e5%9b%be%e8%a1%a8%e6%95%b0%e6%8d%ae%e6%97%b6%e4%bc%9a%e5%87%ba%e7%8e%b0%e7%b4%a2%e5%bc%95%e8%b6%8a\/","title":{"rendered":"\u4e3a\u4ec0\u4e48\u5728\u52a8\u6001\u66f4\u65b0 JFreeChart \u56fe\u8868\u6570\u636e\u65f6\u4f1a\u51fa\u73b0\u201c\u7d22\u5f15\u8d8a\u754c\u201d\u9519\u8bef\uff1f"},"content":{"rendered":"\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u5728\u4f7f\u7528 JFreeChart \u52a8\u6001\u66f4\u65b0\u56fe\u8868\u6570\u636e\u65f6\uff0c\u5982\u679c\u9047\u5230 <strong>\u201c\u7d22\u5f15\u8d8a\u754c\u201d<\/strong>\uff08<code>IndexOutOfBoundsException<\/code>\uff09\u5f02\u5e38\uff0c\u901a\u5e38\u662f\u7531\u4e8e\u4ee5\u4e0b\u51e0\u4e2a\u539f\u56e0\u5f15\u8d77\u7684\u3002\u7406\u89e3\u8fd9\u4e9b\u539f\u56e0\u548c\u89e3\u51b3\u65b9\u6cd5\u80fd\u591f\u5e2e\u52a9\u4f60\u907f\u514d\u8fd9\u4e2a\u95ee\u9898\u3002<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">1. <strong>\u6570\u636e\u66f4\u65b0\u65f6\u6570\u636e\u6e90\u7d22\u5f15\u4e0d\u5339\u914d<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u539f\u56e0<\/strong>\uff1a<br>\u5f53\u4f60\u52a8\u6001\u66f4\u65b0 JFreeChart \u56fe\u8868\u7684\u6570\u636e\u65f6\uff0c\u66f4\u65b0\u7684\u6570\u636e\u6570\u91cf\u4e0e\u73b0\u6709\u7684\u6570\u636e\u7ed3\u6784\uff08\u5982 <code>Dataset<\/code>\uff09\u7684\u9884\u671f\u7ed3\u6784\u4e0d\u5339\u914d\uff0c\u5bfc\u81f4\u7d22\u5f15\u8d8a\u754c\u3002\u4f8b\u5982\uff0c\u8bd5\u56fe\u8bbf\u95ee\u6570\u636e\u96c6\u4e2d\u7684\u4e00\u4e2a\u4e0d\u5b58\u5728\u7684\u7d22\u5f15\u4f4d\u7f6e\uff0c\u6216\u7528\u4e00\u4e2a\u4e0d\u5408\u6cd5\u7684\u7d22\u5f15\u503c\u53bb\u66f4\u65b0\u6570\u636e\u65f6\uff0c\u90fd\u4f1a\u5f15\u53d1\u6b64\u5f02\u5e38\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u89e3\u51b3\u65b9\u6cd5<\/strong>\uff1a<br>\u786e\u4fdd\u5728\u66f4\u65b0\u6570\u636e\u65f6\uff0c\u6570\u636e\u96c6\u4e2d\u7684\u6570\u636e\u70b9\u6570\u91cf\u548c\u7d22\u5f15\u503c\u662f\u6b63\u786e\u7684\u3002\u5982\u679c\u66f4\u65b0\u7684\u7cfb\u5217\u6bd4\u6570\u636e\u96c6\u672c\u8eab\u7684\u957f\u5ea6\u66f4\u957f\uff0c\u6216\u8005\u4f60\u4f20\u5165\u7684\u7d22\u5f15\u8d85\u51fa\u4e86\u73b0\u6709\u6570\u636e\u96c6\u7684\u5927\u5c0f\uff0c\u90fd\u4f1a\u51fa\u73b0\u8fd9\u4e2a\u95ee\u9898\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u793a\u4f8b<\/strong>\uff1a<br>\u5047\u8bbe\u4f60\u6709\u4e00\u4e2a <code>XYSeries<\/code> \u6570\u636e\u96c6\uff0c\u5b83\u7684\u7d22\u5f15\u4ece <code>0<\/code> \u5f00\u59cb\u3002\u5982\u679c\u5728\u66f4\u65b0\u6570\u636e\u65f6\uff0c\u786e\u4fdd\u4f60\u4f7f\u7528\u7684\u7d22\u5f15\u5728\u5f53\u524d\u6570\u636e\u7684\u8303\u56f4\u5185\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>XYSeries series = new XYSeries(\"My Series\");\n\n\/\/ \u6dfb\u52a0\u521d\u59cb\u6570\u636e\u70b9\nseries.add(0.0, 1.0);\nseries.add(1.0, 2.0);\n\n\/\/ \u5728\u66f4\u65b0\u6570\u636e\u65f6\uff0c\u68c0\u67e5\u7d22\u5f15\u662f\u5426\u6709\u6548\nif (series.getItemCount() &gt; 0) {\n    series.update(0, 1.5);  \/\/ \u786e\u4fdd\u7d22\u5f15 0 \u662f\u6709\u6548\u7684\n} else {\n    System.out.println(\"\u7d22\u5f15\u8d85\u51fa\u8303\u56f4\");\n}<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">2. <strong>\u6570\u636e\u6e90\u88ab\u6539\u53d8\uff0c\u5bfc\u81f4\u7cfb\u5217\u7684\u72b6\u6001\u4e0d\u4e00\u81f4<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u539f\u56e0<\/strong>\uff1a<br>\u5982\u679c\u5728\u66f4\u65b0 <code>JFreeChart<\/code> \u56fe\u8868\u7684\u6570\u636e\u65f6\uff0c\u6539\u53d8\u4e86\u6574\u4e2a\u6570\u636e\u96c6\u7684\u7ed3\u6784\uff08\u4f8b\u5982\u5220\u9664\u3001\u63d2\u5165\u6570\u636e\u70b9\uff0c\u6216\u4fee\u6539\u6570\u636e\u7cfb\u5217\u7684\u6570\u91cf\uff09\uff0c\u800c\u6ca1\u6709\u540c\u6b65\u66f4\u65b0\u56fe\u8868\u663e\u793a\uff0c\u8fd9\u53ef\u80fd\u5bfc\u81f4\u8bbf\u95ee\u6570\u636e\u65f6\u51fa\u73b0\u8d8a\u754c\u9519\u8bef\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u89e3\u51b3\u65b9\u6cd5<\/strong>\uff1a<br>\u786e\u4fdd\u5728\u66f4\u65b0\u6570\u636e\u540e\uff0c\u56fe\u8868\u7684\u7ed8\u5236\u548c\u6570\u636e\u6e90\u72b6\u6001\u540c\u6b65\u3002\u4f8b\u5982\uff0c<code>XYSeriesCollection<\/code> \u6570\u636e\u96c6\u7684\u66f4\u65b0\u64cd\u4f5c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u9700\u8981\u91cd\u65b0\u8bbe\u7f6e\u56fe\u8868\u7684\u7cfb\u5217\uff0c\u6216\u8005\u9700\u8981\u5237\u65b0\u663e\u793a\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u793a\u4f8b<\/strong>\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>XYSeriesCollection dataset = new XYSeriesCollection();\nXYSeries series = new XYSeries(\"Series1\");\n\n\/\/ \u66f4\u65b0\u6570\u636e\u524d\u786e\u4fdd\u7d22\u5f15\u548c\u6570\u636e\u6e90\u4e00\u81f4\nseries.add(0, 10);\ndataset.addSeries(series);\n\n\/\/ \u52a8\u6001\u66f4\u65b0\nseries.add(1, 20);  \/\/ \u786e\u4fdd\u7d22\u5f15\u589e\u52a0\u65f6\u4e0e\u6570\u636e\u540c\u6b65\n\nchartPanel.setChart(chart);  \/\/ \u66f4\u65b0\u56fe\u8868<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">3. <strong>\u5f02\u6b65\u66f4\u65b0\u95ee\u9898<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u539f\u56e0<\/strong>\uff1a<br>\u5982\u679c\u5728\u591a\u7ebf\u7a0b\u73af\u5883\u4e2d\uff0c\u56fe\u8868\u6570\u636e\u662f\u7531\u591a\u4e2a\u7ebf\u7a0b\u540c\u65f6\u4fee\u6539\u7684\uff0c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u6570\u636e\u72b6\u6001\u4e0d\u4e00\u81f4\uff0c\u4ece\u800c\u4ea7\u751f\u7d22\u5f15\u8d8a\u754c\u9519\u8bef\u3002\u4f8b\u5982\uff0c\u4e3b\u7ebf\u7a0b\u6b63\u5728\u8bfb\u53d6\u6570\u636e\uff0c\u800c\u66f4\u65b0\u7ebf\u7a0b\u6b63\u5728\u4fee\u6539\u6570\u636e\u65f6\uff0c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u56fe\u8868\u7684\u6570\u636e\u88ab\u4fee\u6539\u4e3a\u4e0d\u4e00\u81f4\u7684\u72b6\u6001\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u89e3\u51b3\u65b9\u6cd5<\/strong>\uff1a<br>\u786e\u4fdd\u56fe\u8868\u6570\u636e\u7684\u66f4\u65b0\u662f\u7ebf\u7a0b\u5b89\u5168\u7684\u3002\u53ef\u4ee5\u4f7f\u7528 <code>SwingUtilities.invokeLater<\/code> \u6216\u5176\u4ed6\u540c\u6b65\u673a\u5236\u6765\u786e\u4fdd\u5728\u66f4\u65b0 JFreeChart \u65f6\u4e0d\u4f1a\u53d1\u751f\u7ade\u4e89\u6761\u4ef6\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u793a\u4f8b<\/strong>\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>SwingUtilities.invokeLater(new Runnable() {\n    @Override\n    public void run() {\n        \/\/ \u5b89\u5168\u5730\u5728 Swing \u4e8b\u4ef6\u5206\u6d3e\u7ebf\u7a0b\u4e2d\u66f4\u65b0\u56fe\u8868\n        series.add(newDataX, newDataY);\n        chartPanel.repaint();  \/\/ \u5237\u65b0\u56fe\u8868\n    }\n});<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">4. <strong>\u6570\u636e\u96c6\u672a\u521d\u59cb\u5316\u6216\u4e3a\u7a7a<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u539f\u56e0<\/strong>\uff1a<br>\u5982\u679c\u4f60\u5728\u66f4\u65b0\u6570\u636e\u4e4b\u524d\uff0c\u56fe\u8868\u7684\u6570\u636e\u96c6\u4e3a\u7a7a\uff0c\u6216\u8005\u6ca1\u6709\u6b63\u786e\u521d\u59cb\u5316\u6570\u636e\u96c6\uff0c\u5c31\u4f1a\u5bfc\u81f4\u6570\u636e\u66f4\u65b0\u65f6\u8bbf\u95ee\u7684\u7d22\u5f15\u8d85\u51fa\u4e86\u73b0\u6709\u7684\u6570\u636e\u8303\u56f4\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u89e3\u51b3\u65b9\u6cd5<\/strong>\uff1a<br>\u5728\u66f4\u65b0\u6570\u636e\u4e4b\u524d\uff0c\u786e\u4fdd\u6570\u636e\u96c6\u5df2\u6b63\u786e\u521d\u59cb\u5316\u4e14\u4e0d\u4e3a\u7a7a\u3002\u5982\u679c\u9700\u8981\uff0c\u53ef\u4ee5\u5728\u6ca1\u6709\u6570\u636e\u7684\u60c5\u51b5\u4e0b\u6dfb\u52a0\u9ed8\u8ba4\u6570\u636e\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u793a\u4f8b<\/strong>\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>XYSeries series = new XYSeries(\"Series\");\nXYSeriesCollection dataset = new XYSeriesCollection(series);\n\n\/\/ \u786e\u4fdd\u6570\u636e\u96c6\u4e0d\u4e3a\u7a7a\nif (dataset.getSeriesCount() &gt; 0) {\n    series.add(0, 10);  \/\/ \u6dfb\u52a0\u6570\u636e\n} else {\n    System.out.println(\"\u6570\u636e\u96c6\u4e3a\u7a7a\");\n}<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">5. <strong>\u66f4\u65b0\u65f6\u4f7f\u7528\u9519\u8bef\u7684\u7d22\u5f15<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u539f\u56e0<\/strong>\uff1a<br>\u4f7f\u7528\u9519\u8bef\u7684\u7d22\u5f15\u6765\u66f4\u65b0\u6570\u636e\u3002\u6bd4\u5982\uff0c\u5728\u6dfb\u52a0\u4e00\u4e2a\u65b0\u7684\u6570\u636e\u70b9\u65f6\u4f7f\u7528\u4e86\u4e0d\u5408\u6cd5\u7684\u7d22\u5f15\u503c\uff0c\u6216\u8005\u5220\u9664\u4e86\u67d0\u4e2a\u6570\u636e\u70b9\u65f6\u7d22\u5f15\u4f4d\u7f6e\u6ca1\u6709\u540c\u6b65\u8c03\u6574\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u89e3\u51b3\u65b9\u6cd5<\/strong>\uff1a<br>\u68c0\u67e5\u4ee3\u7801\u4e2d\u7d22\u5f15\u7684\u8fb9\u754c\u6761\u4ef6\uff0c\u7279\u522b\u662f\u5728\u6dfb\u52a0\u3001\u5220\u9664\u6570\u636e\u70b9\u65f6\uff0c\u786e\u4fdd\u7d22\u5f15\u7684\u6709\u6548\u6027\u3002\u5bf9\u4e8e\u52a8\u6001\u6570\u636e\u66f4\u65b0\uff0c\u4f7f\u7528 <code>add()<\/code> \u65b9\u6cd5\u548c <code>remove()<\/code> \u65b9\u6cd5\u65f6\uff0c\u786e\u4fdd\u64cd\u4f5c\u7d22\u5f15\u5728\u6709\u6548\u8303\u56f4\u5185\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u793a\u4f8b<\/strong>\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>XYSeries series = new XYSeries(\"My Series\");\nseries.add(0.0, 1.0);\nseries.add(1.0, 2.0);\n\n\/\/ \u66f4\u65b0\u6570\u636e\u65f6\uff0c\u68c0\u67e5\u7d22\u5f15\u662f\u5426\u6709\u6548\nif (series.getItemCount() &gt; 1) {\n    series.update(1, 3.0);  \/\/ \u66f4\u65b0\u7d22\u5f15\u4e3a 1 \u7684\u6570\u636e\n} else {\n    System.out.println(\"\u7d22\u5f15\u8d85\u51fa\u8303\u56f4\");\n}<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u603b\u7ed3<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><code>NoSuchBeanDefinitionException<\/code><\/strong> \u9519\u8bef\u901a\u5e38\u662f\u7531\u4e8e\u52a8\u6001\u66f4\u65b0 JFreeChart \u6570\u636e\u65f6\u53d1\u751f\u4e86\u7d22\u5f15\u4e0d\u5339\u914d\u6216\u6570\u636e\u72b6\u6001\u4e0d\u4e00\u81f4\u3002\u5e38\u89c1\u539f\u56e0\u5305\u62ec\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6570\u636e\u6e90\u7d22\u5f15\u548c\u5b9e\u9645\u6570\u636e\u4e0d\u5339\u914d\u3002<\/li>\n\n\n\n<li>\u5728\u6570\u636e\u66f4\u65b0\u540e\u672a\u540c\u6b65\u5237\u65b0\u56fe\u8868\u3002<\/li>\n\n\n\n<li>\u591a\u7ebf\u7a0b\u73af\u5883\u4e0b\u7684\u6570\u636e\u4e0d\u4e00\u81f4\u3002<\/li>\n\n\n\n<li>\u6570\u636e\u96c6\u4e3a\u7a7a\u6216\u672a\u6b63\u786e\u521d\u59cb\u5316\u3002<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u8981\u907f\u514d\u8fd9\u79cd\u60c5\u51b5\uff0c\u5fc5\u987b\u786e\u4fdd\u66f4\u65b0\u6570\u636e\u65f6\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6b63\u786e\u7ba1\u7406\u7d22\u5f15\u8303\u56f4\u3002<\/li>\n\n\n\n<li>\u5728\u66f4\u65b0\u540e\u5237\u65b0\u56fe\u8868\u3002<\/li>\n\n\n\n<li>\u5728\u591a\u7ebf\u7a0b\u73af\u5883\u4e2d\uff0c\u4f7f\u7528\u5408\u9002\u7684\u540c\u6b65\u673a\u5236\u3002<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\uff0c\u53ef\u4ee5\u786e\u4fdd\u56fe\u8868\u5728\u52a8\u6001\u66f4\u65b0\u65f6\u4e0d\u4f1a\u5f15\u53d1\u7d22\u5f15\u8d8a\u754c\u5f02\u5e38\u3002\u66f4\u591a\u8be6\u7ec6\u5185\u5bb9\u8bf7\u5173\u6ce8\u5176\u4ed6\u76f8\u5173\u6587\u7ae0\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728\u4f7f\u7528 JFreeChart \u52a8\u6001\u66f4\u65b0\u56fe\u8868\u6570\u636e\u65f6\uff0c\u5982\u679c\u9047\u5230 \u201c\u7d22\u5f15\u8d8a\u754c\u201d\uff08IndexOutOfBoundsEx [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[68],"tags":[],"class_list":["post-433","post","type-post","status-publish","format-standard","hentry","category-java"],"_links":{"self":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/433","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/comments?post=433"}],"version-history":[{"count":2,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/433\/revisions"}],"predecessor-version":[{"id":437,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/433\/revisions\/437"}],"wp:attachment":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media?parent=433"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/categories?post=433"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/tags?post=433"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}