Java 如何在不硬编码attr name的情况下使用vtd xml解析xml?
这是我的示例XML文件,实际上超过2gb。使用vtd xml,我取得了以下成就: 当前代码:Java 如何在不硬编码attr name的情况下使用vtd xml解析xml?,java,xml,parsing,vtd-xml,Java,Xml,Parsing,Vtd Xml,这是我的示例XML文件,实际上超过2gb。使用vtd xml,我取得了以下成就: 当前代码: PVAL|||298374234 PVAL|||1231 PVAL|||brown PVAL|||medium PVAL|||7 PVAL|||solid PVAL|||brown Sku_ID|||298374234 LotNum|||1231 COLOR|||brown WIDTH|||medium SIZE|||7 Pattern|||solid Color Family|||brown &l
PVAL|||298374234
PVAL|||1231
PVAL|||brown
PVAL|||medium
PVAL|||7
PVAL|||solid
PVAL|||brown
Sku_ID|||298374234
LotNum|||1231
COLOR|||brown
WIDTH|||medium
SIZE|||7
Pattern|||solid
Color Family|||brown
<?xml version="1.0" encoding="UTF-8" ?>
<RECORDS>
<RECORD>
<PROP NAME="Sku_ID">
<PVAL>298374234</PVAL>
</PROP>
<PROP NAME="LotNum">
<PVAL>1231</PVAL>
</PROP>
<PROP NAME="COLOR">
<PVAL>brown</PVAL>
</PROP>
<PROP NAME="WIDTH">
<PVAL>medium</PVAL>
</PROP>
<PROP NAME="SIZE">
<PVAL>7</PVAL>
</PROP>
<PROP NAME="Pattern">
<PVAL>solid</PVAL>
</PROP>
<PROP NAME="Color Family">
<PVAL>brown</PVAL>
</PROP>
</RECORD>
</RECORDS>
当前结果:
PVAL|||298374234
PVAL|||1231
PVAL|||brown
PVAL|||medium
PVAL|||7
PVAL|||solid
PVAL|||brown
Sku_ID|||298374234
LotNum|||1231
COLOR|||brown
WIDTH|||medium
SIZE|||7
Pattern|||solid
Color Family|||brown
<?xml version="1.0" encoding="UTF-8" ?>
<RECORDS>
<RECORD>
<PROP NAME="Sku_ID">
<PVAL>298374234</PVAL>
</PROP>
<PROP NAME="LotNum">
<PVAL>1231</PVAL>
</PROP>
<PROP NAME="COLOR">
<PVAL>brown</PVAL>
</PROP>
<PROP NAME="WIDTH">
<PVAL>medium</PVAL>
</PROP>
<PROP NAME="SIZE">
<PVAL>7</PVAL>
</PROP>
<PROP NAME="Pattern">
<PVAL>solid</PVAL>
</PROP>
<PROP NAME="Color Family">
<PVAL>brown</PVAL>
</PROP>
</RECORD>
</RECORDS>
我想要什么:
PVAL|||298374234
PVAL|||1231
PVAL|||brown
PVAL|||medium
PVAL|||7
PVAL|||solid
PVAL|||brown
Sku_ID|||298374234
LotNum|||1231
COLOR|||brown
WIDTH|||medium
SIZE|||7
Pattern|||solid
Color Family|||brown
<?xml version="1.0" encoding="UTF-8" ?>
<RECORDS>
<RECORD>
<PROP NAME="Sku_ID">
<PVAL>298374234</PVAL>
</PROP>
<PROP NAME="LotNum">
<PVAL>1231</PVAL>
</PROP>
<PROP NAME="COLOR">
<PVAL>brown</PVAL>
</PROP>
<PROP NAME="WIDTH">
<PVAL>medium</PVAL>
</PROP>
<PROP NAME="SIZE">
<PVAL>7</PVAL>
</PROP>
<PROP NAME="Pattern">
<PVAL>solid</PVAL>
</PROP>
<PROP NAME="Color Family">
<PVAL>brown</PVAL>
</PROP>
</RECORD>
</RECORDS>
示例xml:
PVAL|||298374234
PVAL|||1231
PVAL|||brown
PVAL|||medium
PVAL|||7
PVAL|||solid
PVAL|||brown
Sku_ID|||298374234
LotNum|||1231
COLOR|||brown
WIDTH|||medium
SIZE|||7
Pattern|||solid
Color Family|||brown
<?xml version="1.0" encoding="UTF-8" ?>
<RECORDS>
<RECORD>
<PROP NAME="Sku_ID">
<PVAL>298374234</PVAL>
</PROP>
<PROP NAME="LotNum">
<PVAL>1231</PVAL>
</PROP>
<PROP NAME="COLOR">
<PVAL>brown</PVAL>
</PROP>
<PROP NAME="WIDTH">
<PVAL>medium</PVAL>
</PROP>
<PROP NAME="SIZE">
<PVAL>7</PVAL>
</PROP>
<PROP NAME="Pattern">
<PVAL>solid</PVAL>
</PROP>
<PROP NAME="Color Family">
<PVAL>brown</PVAL>
</PROP>
</RECORD>
</RECORDS>
298374234
1231
棕色的
中等的
7.
固体
棕色的
我不想硬编码
attr
名称。我想在访问它们时检索它们。我该怎么做?下面是我对您的代码的编辑,用于打印属性名称和值。。。它是基于xpath的
public static void main(String s[]) throws Exception{
VTDGenHuge vg = new VTDGenHuge();
if (vg.parseFile("d:\\xml\\sku_extract_main.xml",true,VTDGenHuge.MEM_MAPPED)) {
VTDNavHuge vnh = vg.getNav();
AutoPilotHuge aph = new AutoPilotHuge(vnh);
AutoPilotHuge aph2 = new AutoPilotHuge(vnh);
aph.selectElementNS("*", "*");
aph2.selectXPath("@*");
int i = 0;
while (aph.iterate()) {
System.out.println(vnh.toString(vnh.getCurrentIndex()));
int t = vnh.getText();
if (t != -1) {
System.out.println(vnh.toString(vnh.getCurrentIndex()) + "|||" + vnh.toNormalizedString(t));
i++;
}
// below is the my addition
// it basically evaluates the attribute axis
// push pop ensure that the node iteration of the outer while loop
// is consistent
// resetXPath is key here, without it, xpath will not work except for the
// first node returned by aph.iterate()
vnh.push();
while((i=aph2.evalXPath())!=-1){
System.out.println(" attr name "+vnh.toString(i));
System.out.println("attr val "+vnh.toString(i+1));
}
aph2.resetXPath();
vnh.pop();
}
}
你能补充一下你在做什么吗
vnh.toNormalizedString(t)
这会给我属性的值,例如298374234,但只在if范围内,而不在while范围内,在while范围内抛出IndexOutOfBoundsException
。而vnh.toString(i+1)
给了我属性的名称,例如Sku_ID。你说的indexoutofBoundsException是什么意思?关于indexoutofBoundsException,我试图在while范围内提取attr值,即vnh.toNormalizedString(t)。以及t=vnh.getText();vnh.toNormalizedString(t)
这是该节点的实际值。它看起来一点都不像属性,是您所指的文本值吗?