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Java 为值解析html内容

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Java 为值解析html内容,java,Java,调用后，我收到一个Http响应作为Html字符串，我想刮取ReportViewer1变量中存储的特定值 <html> .................... ........... <script type="text/javascript"> var ReportViewer1 = new ReportViewer('ReportViewer1', 'ReportViewer1_ReportToo

调用后，我收到一个Http响应作为Html字符串，我想刮取
ReportViewer1
变量中存储的特定值

  <html>

   ....................
    ...........
<script type="text/javascript">
                var ReportViewer1 = new ReportViewer('ReportViewer1', 'ReportViewer1_ReportToolbar', 'ReportViewer1_ReportArea_WaitControl', 'ReportViewer1_ReportArea_ReportCell', 'ReportViewer1_ReportArea_PreviewFrame', 'ReportViewer1_ParametersAreaCell', 'ReportViewer1_ReportArea_ErrorControl', 'ReportViewer1_ReportArea_ErrorLabel', 'ReportViewer1_CP', '/app/Telerik.ReportViewer.axd', 'a90a0d41efa6429eadfefa42fc529de1', 'Percent', '100', '', 'ReportViewer1_EditorPlaceholder', 'ReportViewer1_CalendarFrame', 'ReportViewer1_ReportArea_DocumentMapCell', {
                    CurrentPageToolTip: 'STR_TELERIK_MSG_CUR_PAGE_TOOL_TIP',
                    ExportButtonText: 'Export',
                    ExportToolTip: 'Export',
                    ExportSelectFormatText: 'Export to the selected format',
                    FirstPageToolTip: 'First page',
                    LabelOf: 'of',
                    LastPageToolTip: 'Last Page',
                    ProcessingReportMessage: 'Generating report...',
                    NoPageToDisplay: 'No page to display.',
                    NextPageToolTip: 'Next page',
                    ParametersToolTip: 'Click to close parameters area|Click to open parameters area',
                    DocumentMapToolTip: 'Hide document map|Show document map',
                    PreviousPageToolTip: 'Previous page',
                    TogglePageLayoutToolTip: 'Switch to interactive view|Switch to print preview',
                    SessionHasExpiredError: 'Session has expired.',
                    SessionHasExpiredMessage: 'Please, refresh the page.',
                    PrintToolTip: 'Print',
                    RefreshToolTip: 'Refresh',
                    NavigateBackToolTip: 'Navigate back',
                    NavigateForwardToolTip: 'Navigate forward',
                    ReportParametersSelectAllText: '<select all>',
                    ReportParametersSelectAValueText: '<select a value>',
                    ReportParametersInvalidValueText: 'Invalid value.',
                    ReportParametersNoValueText: 'Value required.',
                    ReportParametersNullText: 'NULL',
                    ReportParametersPreviewButtonText: 'Preview',
                    ReportParametersFalseValueLabel: 'False',
                    ReportParametersInputDataError: 'Missing or invalid parameter value. Please input valid data for all parameters.',
                    ReportParametersTrueValueLabel: 'True',
                    MissingReportSource: 'The source of the report definition has not been specified.',
                    ZoomToPageWidth: 'Page Width',
                    ZoomToWholePage: 'Full Page'
                }, 'ReportViewer1_ReportArea_ReportArea', 'ReportViewer1_ReportArea_SplitterCell', 'ReportViewer1_ReportArea_DocumentMapCell', true, true, 'PDF', 'ReportViewer1_RSID', true);
            </script>

  ...................
  ...................
</html>
使用Java解析此值的最佳方法是什么？

我会像读取大多数文件一样一次读取一行文本。因为格式总是相同的，所以您可以查找以字符“var ReportViewer1”开头的行。然后您就知道找到了所需的行。您可能需要去除一些空白，尽管它也将始终使用相同的空白进行格式化（具体取决于您）

有了行后，使用String.split（）方法将该行拆分为数组。有很好的分隔符可以分割。。。“，”或“或”，“。。。再次，看看什么最适合你

测试“/app/Telerik.ReportViewer.axd”的拆分行部件。。。拆分数组的下一个成员将是您要查找的值

同样，格式将始终相同，因此您可以依靠它来查找变量。当然，研究html文本以确保它在您正在调查的行中始终遵循相同的格式，但是看看它，我认为它可能会遵循相同的格式

再次，找到你的线路。。。在分隔符上拆分它。。。并使用一些逻辑在拆分行部分中查找您要查找的元素。

使用字符串类解析HTML

public class HtmlParser {

    public static void main(String args[]){
        String result = getValuesProp(html);
        System.out.println("Result: "+ result);
    }

    static String PIVOT = "Telerik.ReportViewer.axd";

    public static String getValuesProp(String json) {
        String subString;

        int i = json.indexOf(PIVOT);
        i+= PIVOT.length();
        //', chars
        i+=2;
        subString = json.substring(i);

        i = subString.indexOf("'");
        i++;
        subString = subString.substring(i);
        i = subString.indexOf("'");
        subString = subString.substring(0,i);
        return subString;
    }

    static String html ="<html>\n" +
            "\n" +
            "<script type=\"text/javascript\">\n" +
            "                var ReportViewer1 = new ReportViewer('ReportViewer1', 'ReportViewer1_ReportToolbar', 'ReportViewer1_ReportArea_WaitControl', 'ReportViewer1_ReportArea_ReportCell', 'ReportViewer1_ReportArea_PreviewFrame', 'ReportViewer1_ParametersAreaCell', 'ReportViewer1_ReportArea_ErrorControl', 'ReportViewer1_ReportArea_ErrorLabel', 'ReportViewer1_CP', '/app/Telerik.ReportViewer.axd', 'a90a0d41efa6429eadfefa42fc529de1', 'Percent', '100', '', 'ReportViewer1_EditorPlaceholder', 'ReportViewer1_CalendarFrame', 'ReportViewer1_ReportArea_DocumentMapCell', {\n" +
            "                    CurrentPageToolTip: 'STR_TELERIK_MSG_CUR_PAGE_TOOL_TIP',\n" +
            "                    ExportButtonText: 'Export',\n" +
            "                    ExportToolTip: 'Export',\n" +
            "                    ExportSelectFormatText: 'Export to the selected format',\n" +
            "                    FirstPageToolTip: 'First page',\n" +
            "                    LabelOf: 'of',\n" +
            "                    LastPageToolTip: 'Last Page',\n" +
            "                    ProcessingReportMessage: 'Generating report...',\n" +
            "                    NoPageToDisplay: 'No page to display.',\n" +
            "                    NextPageToolTip: 'Next page',\n" +
            "                    ParametersToolTip: 'Click to close parameters area|Click to open parameters area',\n" +
            "                    DocumentMapToolTip: 'Hide document map|Show document map',\n" +
            "                    PreviousPageToolTip: 'Previous page',\n" +
            "                    TogglePageLayoutToolTip: 'Switch to interactive view|Switch to print preview',\n" +
            "                    SessionHasExpiredError: 'Session has expired.',\n" +
            "                    SessionHasExpiredMessage: 'Please, refresh the page.',\n" +
            "                    PrintToolTip: 'Print',\n" +
            "                    RefreshToolTip: 'Refresh',\n" +
            "                    NavigateBackToolTip: 'Navigate back',\n" +
            "                    NavigateForwardToolTip: 'Navigate forward',\n" +
            "                    ReportParametersSelectAllText: '<select all>',\n" +
            "                    ReportParametersSelectAValueText: '<select a value>',\n" +
            "                    ReportParametersInvalidValueText: 'Invalid value.',\n" +
            "                    ReportParametersNoValueText: 'Value required.',\n" +
            "                    ReportParametersNullText: 'NULL',\n" +
            "                    ReportParametersPreviewButtonText: 'Preview',\n" +
            "                    ReportParametersFalseValueLabel: 'False',\n" +
            "                    ReportParametersInputDataError: 'Missing or invalid parameter value. Please input valid data for all parameters.',\n" +
            "                    ReportParametersTrueValueLabel: 'True',\n" +
            "                    MissingReportSource: 'The source of the report definition has not been specified.',\n" +
            "                    ZoomToPageWidth: 'Page Width',\n" +
            "                    ZoomToWholePage: 'Full Page'\n" +
            "                }, 'ReportViewer1_ReportArea_ReportArea', 'ReportViewer1_ReportArea_SplitterCell', 'ReportViewer1_ReportArea_DocumentMapCell', true, true, 'PDF', 'ReportViewer1_RSID', true);\n" +
            "            </script>\n" +
            "\n" +
            "</html>";

}

公共类HTMLPasser{
公共静态void main（字符串参数[]）{
字符串结果=GetValuesPro（html）；
System.out.println（“结果：+Result”）；
}
静态字符串PIVOT=“Telerik.ReportViewer.axd”；
公共静态字符串GetValuesPro（字符串json）{
字符串子串；
inti=json.indexOf（PIVOT）；
i+=PIVOT.length（）；
//”“查理
i+=2；
subString=json.subString（i）；
i=子字符串。indexOf（“”）；
i++；
子串=子串。子串（i）；
i=子字符串。indexOf（“”）；
子字符串=子字符串。子字符串（0，i）；
返回子串；
}
静态字符串html=“\n”+
“\n”+
“\n”+
“var ReportViewer1=新的ReportViewer（‘ReportViewer1’、‘ReportViewer1_ReportToolbar’、‘ReportViewer1_ReportArea_WaitControl’、‘ReportViewer1_ReportArea_ReportCell’、‘ReportViewer1_ReportArea_PreviewFrame’、‘ReportViewer1_ReportArea_ErrorControl’、‘ReportViewer1_ReportArea_ErrorLabel’、‘ReportViewer1_CP’、‘/app/Telerik.ReportViewer.axd’、‘a90a0d41efA6429EADFAF42FC529DE1、、、、、、、、、、、、、、、、、、、、、、、、、、、、、、、、、、、、、、、+
“当前页面工具提示：'STR\u TELERIK\u MSG\u CUR\u PAGE\u TOOL\u TIP'，\n”+
ExportButtonText:'导出'，\n+
ExportToolTip:'导出'，\n+
ExportSelectFormatText:'导出为所选格式'，\n+
FirstPageToolTip:'第一页'，\n+
LabelOf:'of'，\n+
LastPageToolTip:'最后一页'，\n+
正在处理ReportMessage:'正在生成报告…'，\n+
NoPageToDisplay:'没有要显示的页面'，\n+
“NextPagetToolTip:'下一页'，\n”+
“ParametersToOptip:'单击以关闭参数区域|单击以打开参数区域'，\n”+
DocumentMapToolTip:'隐藏文档映射|显示文档映射'，\n+
“PreviousPageToolTip:'上一页'，\n”+
“TogglePageLayoutToolTip:'切换到交互式视图|切换到打印预览'，\n”+
SessionHasExpiredError:'会话已过期'，\n+
SessionHasExpiredMessage:'请刷新页面'，\n+
打印工具提示：“打印”，\n+
刷新工具提示：“刷新”，\n+
NavigateBackToolTip:'向后导航'，\n+
NavigateForward工具提示：“向前导航”，\n+
“报告参数SelectAllText:”“\n”+
ReportParametersSelectAValueText:“”，\n+
ReportParametersInvalidValueText:'无效值'，\n+
ReportParametersNoValueText:'需要值'，\n+
ReportParametersAllText:'NULL'，\n+
ReportParametersPreviewButtonText:“预览”，\n+
ReportParametersFalseValueLabel:'False'，\n+
ReportParametersInputDataError:'缺少参数值或参数值无效。请为所有参数输入有效数据。'，\n+
ReportParametersTrueValueLabel:'True'，\n+
MissingReportSource:'尚未指定报告定义的源。'，\n+
ZoomToPageWidth:'页面宽度'，\n+
ZoomToWholePage:'整页'\n+
“}，'ReportViewer1_ReportArea_ReportArea_ReportArea'，'ReportViewer1_ReportArea_SplitterCell'，'ReportViewer1_ReportArea_DocumentMapCell'，true，true，true，'PDF'，'ReportViewer1_RSID'，true）；\n”+
“\n”+
“\n”+
"";
}
如果您只是想摆脱
a90a0d41efa6429eadfefa42fc529de1
，那么您可以使用字符串。replace（
，'a90a0d41efa6429eadfafa2fc529de1“
，”）命令。LOL我正在尝试提取此变量：）您在问题中说了“scrap”，所以我不确定您想用它做什么。 
public class HtmlParser {

    public static void main(String args[]){
        String result = getValuesProp(html);
        System.out.println("Result: "+ result);
    }

    static String PIVOT = "Telerik.ReportViewer.axd";

    public static String getValuesProp(String json) {
        String subString;

        int i = json.indexOf(PIVOT);
        i+= PIVOT.length();
        //', chars
        i+=2;
        subString = json.substring(i);

        i = subString.indexOf("'");
        i++;
        subString = subString.substring(i);
        i = subString.indexOf("'");
        subString = subString.substring(0,i);
        return subString;
    }

    static String html ="<html>\n" +
            "\n" +
            "<script type=\"text/javascript\">\n" +
            "                var ReportViewer1 = new ReportViewer('ReportViewer1', 'ReportViewer1_ReportToolbar', 'ReportViewer1_ReportArea_WaitControl', 'ReportViewer1_ReportArea_ReportCell', 'ReportViewer1_ReportArea_PreviewFrame', 'ReportViewer1_ParametersAreaCell', 'ReportViewer1_ReportArea_ErrorControl', 'ReportViewer1_ReportArea_ErrorLabel', 'ReportViewer1_CP', '/app/Telerik.ReportViewer.axd', 'a90a0d41efa6429eadfefa42fc529de1', 'Percent', '100', '', 'ReportViewer1_EditorPlaceholder', 'ReportViewer1_CalendarFrame', 'ReportViewer1_ReportArea_DocumentMapCell', {\n" +
            "                    CurrentPageToolTip: 'STR_TELERIK_MSG_CUR_PAGE_TOOL_TIP',\n" +
            "                    ExportButtonText: 'Export',\n" +
            "                    ExportToolTip: 'Export',\n" +
            "                    ExportSelectFormatText: 'Export to the selected format',\n" +
            "                    FirstPageToolTip: 'First page',\n" +
            "                    LabelOf: 'of',\n" +
            "                    LastPageToolTip: 'Last Page',\n" +
            "                    ProcessingReportMessage: 'Generating report...',\n" +
            "                    NoPageToDisplay: 'No page to display.',\n" +
            "                    NextPageToolTip: 'Next page',\n" +
            "                    ParametersToolTip: 'Click to close parameters area|Click to open parameters area',\n" +
            "                    DocumentMapToolTip: 'Hide document map|Show document map',\n" +
            "                    PreviousPageToolTip: 'Previous page',\n" +
            "                    TogglePageLayoutToolTip: 'Switch to interactive view|Switch to print preview',\n" +
            "                    SessionHasExpiredError: 'Session has expired.',\n" +
            "                    SessionHasExpiredMessage: 'Please, refresh the page.',\n" +
            "                    PrintToolTip: 'Print',\n" +
            "                    RefreshToolTip: 'Refresh',\n" +
            "                    NavigateBackToolTip: 'Navigate back',\n" +
            "                    NavigateForwardToolTip: 'Navigate forward',\n" +
            "                    ReportParametersSelectAllText: '<select all>',\n" +
            "                    ReportParametersSelectAValueText: '<select a value>',\n" +
            "                    ReportParametersInvalidValueText: 'Invalid value.',\n" +
            "                    ReportParametersNoValueText: 'Value required.',\n" +
            "                    ReportParametersNullText: 'NULL',\n" +
            "                    ReportParametersPreviewButtonText: 'Preview',\n" +
            "                    ReportParametersFalseValueLabel: 'False',\n" +
            "                    ReportParametersInputDataError: 'Missing or invalid parameter value. Please input valid data for all parameters.',\n" +
            "                    ReportParametersTrueValueLabel: 'True',\n" +
            "                    MissingReportSource: 'The source of the report definition has not been specified.',\n" +
            "                    ZoomToPageWidth: 'Page Width',\n" +
            "                    ZoomToWholePage: 'Full Page'\n" +
            "                }, 'ReportViewer1_ReportArea_ReportArea', 'ReportViewer1_ReportArea_SplitterCell', 'ReportViewer1_ReportArea_DocumentMapCell', true, true, 'PDF', 'ReportViewer1_RSID', true);\n" +
            "            </script>\n" +
            "\n" +
            "</html>";

}