import org.objectweb.asm.commons.MethodRemapper; //导入依赖的package包/类
@RequiresNonNull("type")
private void addMixin(ClassNode mixinClassNode) {
    List<FieldNode> fieldNodes = mixinClassNode.fields;
    for (FieldNode fieldNode : fieldNodes) {
        fieldNode.accept(this);
    }
    List<MethodNode> methodNodes = mixinClassNode.methods;
    for (MethodNode mn : methodNodes) {
        if (mn.name.equals("<init>")) {
            continue;
        }
        String[] exceptions = Iterables.toArray(mn.exceptions, String.class);
        MethodVisitor mv =
                cw.visitMethod(mn.access, mn.name, mn.desc, mn.signature, exceptions);
        mn.accept(new MethodRemapper(mv,
                new SimpleRemapper(mixinClassNode.name, type.getInternalName())));
    }
}
 

import org.objectweb.asm.commons.MethodRemapper; //导入依赖的package包/类
@Override
protected MethodVisitor createMethodRemapper(MethodVisitor mv) {
    return new MethodRemapper(mv, RemappingAdapter.this.remapper) {

        @Override
        public void visitFieldInsn(int opcode, String owner, String name, String desc) {
            String type = this.remapper.mapType(owner);
            String fieldName = this.remapper.mapFieldName(owner, name, desc);
            String newDesc = this.remapper.mapDesc(desc);
            if (opcode == Opcodes.GETSTATIC && type.startsWith("net/minecraft/") && newDesc
                    .startsWith("Lnet/minecraft/")) {
                String replDesc = getStaticFieldType(owner, name, type, fieldName);
                if (replDesc != null) {
                    newDesc = this.remapper.mapDesc(replDesc);
                }
            }

            if (this.mv != null) {
                this.mv.visitFieldInsn(opcode, type, fieldName, newDesc);
            }
        }
    };
}