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@@ -368,7 +368,11 @@ public class ExamQuestionOuterServiceProvider extends ControllerSupport implemen
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* @return
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*/
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private String getImgTxt(String studentAnswer) {
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- return Jsoup.clean(studentAnswer, Whitelist.basic());
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+ if (!StringUtils.isNullOrEmpty(studentAnswer)) {
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+ return Jsoup.clean(studentAnswer, Whitelist.basic());
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+ }
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+
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+ return null;
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}
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/**
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