我正在尝试对Web应用程序进行一些junit测试,并且我不断收到OutOfMemoryError。我知道它在代码中发生了什么,但我不确定它为什么会这样做。
Survey survey = new Survey();
SurveyLayoutColumn column1 = new SurveyLayoutColumn();
column1.addAnswerSpace(new Answer());
SurveyLayoutColumn column2 = new SurveyLayoutColumn();
column2.addAnswerSpace(new Answer());
column2.addAnswerSpace(new Answer());
SurveyLayoutColumn column3 = new SurveyLayoutColumn();
column3.addAnswerSpace(new Answer());
survey.addLayoutColumn(column1);
survey.addLayoutColumn(column2);
survey.addLayoutColumn(column3);
survey.addQuestion(new Question());
survey.addQuestion(new Question());
survey.addQuestion(new Question());
survey.addQuestion(new Question());
Application app = new controllers.Application();
app.saveSurvey(survey);
long count = Survey.count();
assertEquals(count,0);
它发生在app.saveSurvey(确定),这是该方法的代码
public static void saveSurvey(Survey survey) {
System.out.println("Survey title is: " + survey.title);
survey.published = true;
survey.save();
Map<String, Object> viewData = new HashMap<String, Object>();
viewData.put("status", "success");
JSONSerializer serializer = new JSONSerializer();
serializer
.include("status")
.exclude("*");
renderJSON(serializer.serialize(viewData));
}
为什么会发生这种情况会有任何帮助。
编辑: 这是跟踪
java.lang.OutOfMemoryError: Java heap space
at java.util.Arrays.copyOf(Arrays.java:2882)
at java.lang.AbstractStringBuilder.expandCapacity(AbstractStringBuilder.java:100)
at java.lang.AbstractStringBuilder.append(AbstractStringBuilder.java:390)
at java.lang.StringBuilder.append(StringBuilder.java:119)
at play.data.binding.Unbinder.unBind(Unbinder.java:106)
at play.data.binding.Unbinder.unBind(Unbinder.java:110)
at play.data.binding.Unbinder.unBind(Unbinder.java:63)
at play.data.binding.Unbinder.unBind(Unbinder.java:110)
at play.data.binding.Unbinder.unBind(Unbinder.java:110)
at play.data.binding.Unbinder.unBind(Unbinder.java:63)
at play.data.binding.Unbinder.unBind(Unbinder.java:110)
at play.data.binding.Unbinder.unBind(Unbinder.java:110)
at play.data.binding.Unbinder.unBind(Unbinder.java:63)
at play.data.binding.Unbinder.unBind(Unbinder.java:110)
at play.data.binding.Unbinder.unBind(Unbinder.java:110)
at play.data.binding.Unbinder.unBind(Unbinder.java:63)
at play.data.binding.Unbinder.unBind(Unbinder.java:110)
at play.data.binding.Unbinder.unBind(Unbinder.java:110)
at play.data.binding.Unbinder.unBind(Unbinder.java:63)
at play.data.binding.Unbinder.unBind(Unbinder.java:110)
at play.data.binding.Unbinder.unBind(Unbinder.java:110)
at play.data.binding.Unbinder.unBind(Unbinder.java:63)
at play.data.binding.Unbinder.unBind(Unbinder.java:110)
at play.data.binding.Unbinder.unBind(Unbinder.java:110)
at play.data.binding.Unbinder.unBind(Unbinder.java:63)
at play.data.binding.Unbinder.unBind(Unbinder.java:110)
at play.data.binding.Unbinder.unBind(Unbinder.java:110)
at play.data.binding.Unbinder.unBind(Unbinder.java:63)
at play.data.binding.Unbinder.unBind(Unbinder.java:110)
at play.data.binding.Unbinder.unBind(Unbinder.java:110)
at play.data.binding.Unbinder.unBind(Unbinder.java:63)
at play.data.binding.Unbinder.unBind(Unbinder.java:110)
答案 0 :(得分:0)
好吧,似乎Unbinder.unbind()处于一个循环中,调用自身,并且每次调用它都会吸收一点内存;它可以通过堆栈来实现,它在每次调用时使用,或者连接到AbstractStringBuilder。
内存不足是堆栈跟踪不一定指向问题行的一次;在这些情况下,堆栈跟踪通常会显示一些这样的循环。