我有两个 HashMap 的 HashMap 。对于实例让,
HashMap map1 =
键:mapview值:{backgroundimage=字符变化,mapviewname=字符变化,mapviewid=字符}
键:am_mypage_template_mgs 值:{resourceid=integer,pageid=integer}
键:am_tomcatinfo 值:{resourceid=bigint,url=字符变化,sslenabled=字符变化}
还有
HashMap map2 =
键:mapview值:{backgroundimage=字符变化,mapviewname=字符变化,mapviewid=整数}
键:am_mypage_template_mgs 值:{resourceid=integer}
我必须比较这两个并找出map2 中缺少map1 中的哪些键。如果键存在,我必须比较内部映射并将map1的内部映射的键与map2的内部映射进行比较。如果键存在,我必须将与map1 的内部映射对应的值与map2 进行比较。
我的代码是,
map1.entrySet().forEach(entry -> {
if (map2.containsKey(entry.getKey())) {
if (entry.getValue().equals(map2.get(entry.getKey()))) {
count++;
} else {
entry.getValue().entrySet().forEach(inside_entry->{
if(map2.get(entry.getKey()).containsKey(inside_entry.getKey())) {
Map<String, String> n = new HashMap<String, String>();
n.putAll(map2.get(entry.getKey()));
if((inside_entry.getValue()).equals(map2.get(n))){
}
else {
System.out.println("Tablename1 : "+ entry.getKey() +" Key :"+inside_entry.getKey()+" value : "+inside_entry.getValue());
}
}
});
System.out.println(entry.getValue());
}
} else {
System.out.println("\"" + entry.getKey() + "\" entire table is not found");
}
});
我的输出应该是这样的,
key am_tomcatinfo in map1 missing in map2
In am_mypage_template_mgs, pageid in map1 is missing in map2
In mapview, mapviewid=character in map1 is not equal to mapviewid=integer in map2
我应该做什么?
最佳答案
根据您的描述,直接的方法是使用两个映射的 forEach()
(而不是 entrySet().forEach()
)来比较键和值:如下:
map1.forEach((k0, v0) -> {
if (!map2.containsKey(k0)) {
System.out.println(String.format("key %s in map1 missing in map2", k0));
} else {
v0.forEach((k1, v1) -> {
if (!map2.get(k0).containsKey(k1)) {
System.out.println(String.format("In %s, %s in map1 is missing in map2", k0, k1));
} else {
if (!v1.equals(map2.get(k0).get(k1))) {
System.out.println(String.format("In %s, %s=%s in map1 is not equal to %s=%s in map2", k0, k1, v1, k1, map2.get(k0).get(k1)));
}
}
});
}
});
控制台输出是
In am_mypage_template_mgs, pageid in map1 is missing in map2
key am_tomcatinfo in map1 missing in map2
In mapview, mapviewid=character in map1 is not equal to mapviewid=integer in map2
关于java - 比较两个hashmap的hashmap,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/58056895/