json 读取数据问题，高手来看看。

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:572)
at java.lang.StringBuilder.append(StringBuilder.java:203)
at com.googlecode.jsonplugin.JSONWriter.add(JSONWriter.java:502)
at com.googlecode.jsonplugin.JSONWriter.string(JSONWriter.java:488)
at com.googlecode.jsonplugin.JSONWriter.process(JSONWriter.java:143)
at com.googlecode.jsonplugin.JSONWriter.value(JSONWriter.java:127)
at com.googlecode.jsonplugin.JSONWriter.add(JSONWriter.java:323)
at com.googlecode.jsonplugin.JSONWriter.bean(JSONWriter.java:225)
at com.googlecode.jsonplugin.JSONWriter.process(JSONWriter.java:161)
at com.googlecode.jsonplugin.JSONWriter.value(JSONWriter.java:127)
at com.googlecode.jsonplugin.JSONWriter.array(JSONWriter.java:409)
at com.googlecode.jsonplugin.JSONWriter.process(JSONWriter.java:151)
at com.googlecode.jsonplugin.JSONWriter.value(JSONWriter.java:127)
at com.googlecode.jsonplugin.JSONWriter.add(JSONWriter.java:323)
at com.googlecode.jsonplugin.JSONWriter.bean(JSONWriter.java:225)
at com.googlecode.jsonplugin.JSONWriter.process(JSONWriter.java:161)
at com.googlecode.jsonplugin.JSONWriter.value(JSONWriter.java:127)
at com.googlecode.jsonplugin.JSONWriter.add(JSONWriter.java:323)
at com.googlecode.jsonplugin.JSONWriter.bean(JSONWriter.java:225)
at com.googlecode.jsonplugin.JSONWriter.process(JSONWriter.java:161)
at com.googlecode.jsonplugin.JSONWriter.value(JSONWriter.java:127)
at com.googlecode.jsonplugin.JSONWriter.array(JSONWriter.java:409)
at com.googlecode.jsonplugin.JSONWriter.process(JSONWriter.java:151)
at com.googlecode.jsonplugin.JSONWriter.value(JSONWriter.java:127)
at com.googlecode.jsonplugin.JSONWriter.add(JSONWriter.java:323)
at com.googlecode.jsonplugin.JSONWriter.bean(JSONWriter.java:225)
at com.googlecode.jsonplugin.JSONWriter.process(JSONWriter.java:161)
at com.googlecode.jsonplugin.JSONWriter.value(JSONWriter.java:127)
at com.googlecode.jsonplugin.JSONWriter.add(JSONWriter.java:323)
at com.googlecode.jsonplugin.JSONWriter.bean(JSONWriter.java:225)