拓扑错误：自交。jts.geom.TopologyException: found non-noded intersection between LINESTRING

That being said, you will want to ensure the geometries are valid before computing the intersection, using polygon1.isValid() and polygon2.isValid(). The sample data for polygon2 is self-intersecting, so the intersection operation fails with

com.vividsolutions.jts.geom.TopologyException: found non-noded intersection between LINESTRING ( 2.0 0.0, 2.0 2.0 ) and LINESTRING ( 1.0 1.0, 2.5 1.5 ) [ (2.0, 1.3333333333333333, NaN) ]

参考：https://stackoverflow.com/questions/51322693/geotools-calculate-intersection-area-between-two-geometries-needed